Bump Microsoft.Data.SqlClient from 5.1.5 to 6.1.3 #56

dependabot · 2025-11-21T06:36:10Z

Updated Microsoft.Data.SqlClient from 5.1.5 to 6.1.3.

Release notes

Sourced from Microsoft.Data.SqlClient's releases.

6.1.3

This update includes the following changes since the 6.1.2 release:

Added

App Context Switch for Ignoring Server-Provided Failover Partner

What Changed:

A new app context switch Switch.Microsoft.Data.SqlClient.IgnoreServerProvidedFailoverPartner was introduced to let the client ignore server-provided failover partner info in Basic Availability Groups (BAGs). When the switch is enabled, only the failover partner specified in the connection string is used; server-supplied partner values are skipped. This context switch was introduced in PR #3702.

Who Benefits:

Applications connecting to SQL Server BAGs using TCP and custom ports, especially where the server's provided partner name lacks the protocol, host, or port. This avoids connection failures when the server-provided partner is incompatible or incomplete.
Teams who manage availability groups and rely on client-side control of failover behavior in heterogeneous networking environments.

Impact:

If your environment might be affected (i.e., you operate a BAG with custom ports, or have experienced failures after failover), you can enable the new switch in your application:

AppContext.SetSwitch("Switch.Microsoft.Data.SqlClient.IgnoreServerProvidedFailoverPartner", true);

Then, ensure your connection string includes your preferred failover partner (with correct tcp:host,port) so that the client uses that instead of the server's suggestion.
Without enabling this, by default, the client continues to prefer the server-provided partner, maintaining backwards compatibility.

Fixed

Fixed an issue to ensure reliable metrics initialization during startup, preventing missed telemetry when EventSource is enabled early. (#3718)

Target Platform Support

.NET Framework 4.6.2+ (Windows ARM64, Windows x86, Windows x64)
.NET 8.0+ (Windows x86, Windows x64, Windows ARM64, Windows ARM, Linux, macOS)

Dependencies

.NET Framework 4.6.2+

Azure.Core 1.47.1
Azure.Identity 1.14.2
Microsoft.Bcl.Cryptography 8.0.0
Microsoft.Data.SqlClient.SNI 6.0.2
Microsoft.Extensions.Caching.Memory 8.0.1
Microsoft.IdentityModel.JsonWebTokens 7.7.1
Microsoft.IdentityModel.Protocols.OpenIdConnect 7.7.1
System.Buffers 4.5.1
System.Data.Common 4.3.0
System.Security.Cryptography.Pkcs 8.0.1
System.Text.Encodings.Web 8.0.0
... (truncated)

6.1.2

This update brings the below changes over the previous stable release:

Fixed

Fixed an issue where initializing PerformanceCounters would throw System.InvalidOperationException #3629
Fixed an issue where a Custom SqlClientAuthenticationProvider was being overwritten by default implementation. #3651
Fixed a concurrency issue in connection pooling where the number of active connections could be lower than the configured maximum pool size. #3653

6.1.1

This update includes the following changes since the 6.1.0 release:

Fixed

Reverted changes related to improving partial packet detection, fixup, and replay functionality. This revert addresses regressions introduced in 6.1.0. (#3556)
Applied reference assembly corrections supporting vector, fixed JSON tests, and ensured related tests are enabled. #3562
Fixed SqlVector<T>.Null API signature in Reference assembly. #3521

Changed

Upgraded Azure.Identity and other dependencies to newer versions. (#3538) (#3552)

6.1.0

Release Notes

[!WARNING]
This release version is delisted from NuGet.org and is no longer supported.
It contains critical bugs that make it unsuitable for use.

Stable Release 6.1.0 - 2025-07-25

This update brings the following changes since the 6.0.2 stable release:

Added

Added dedicated SQL Server vector datatype support

What Changed:

Optimized vector communications between MDS and SQL Server 2025, employing a custom binary format over the TDS protocol. (#3433, #3443)
Reduced processing load compared to existing JSON-based vector support.
Initial support for 32-bit single-precision floating point vectors.

Who Benefits:

Applications moving large vector data sets will see beneficial improvements to processing times and memory requirements.
Vector-specific APIs are ready to support future numeric representations with a consistent look-and-feel.

Impact:

Reduced transmission and processing times for vector operations versus JSON using SQL Server 2025 preview:
- Reads: 50x improvement
- Writes: 3.3x improvement
- Bulk Copy: 19x improvement
- (Observed with vector column of max 1998 size, and 10,000 records for each operation.)
Improved memory footprint due to the elimination of JSON serialization/deserialization and string representation bloat.
For backwards compatibility with earlier SQL Server Vector implementations, applications may continue to use JSON strings to send/receive vector data, although they will not see any of the performance improvements noted above.

Revived .NET Standard 2.0 target support

What Changed:

Support for targeting .NET Standard 2.0 has returned. (#3381)
Support had previously been removed in the 6.0 release, with the community voicing concerns.

Who Benefits:

Libraries that depend on MDS may seamlessly target any of the following frameworks:
- .NET Standard 2.0
- .NET Framework 4.6.2 and above
- .NET 8.0
- .NET 9.0
Applications should continue to target runtimes.
... (truncated)

6.1.0-preview2

Preview Release 6.1.0-preview2.25178.5 - 2025-06-27

This update brings the following changes since the 6.1.0-preview1 release:

Added

Added dedicated SQL Server vector datatype support

What Changed:

Optimized vector communications between MDS and SQL Server 2025, employing a custom binary format over the TDS protocol. (#3433, #3443)
Reduced processing load compared to existing JSON-based vector support.
Initial support for 32-bit single-precision floating point vectors.

Who Benefits:

Applications moving large vector data sets will see beneficial improvements to processing times and memory requirements.
Vector-specific APIs are ready to support future numeric representations with a consistent look-and-feel.

Impact:

Reduced transmission and processing times for vector operations versus JSON using SQL Server 2025 preview:
- Reads: 50x improvement
- Writes: 3.3x improvement
- Bulk Copy: 19x improvement
- (Observed with vector column of max 1998 size, and 10,000 records for each operation.)
Improved memory footprint due to the elimination of JSON serialization/deserialization and string representation bloat.
For backwards compatibility with earlier SQL Server Vector implementations, applications may continue to use JSON strings to send/receive vector data, although they will not see any of the performance improvements noted above.

Revived .NET Standard 2.0 target support

What Changed:

Support for targeting .NET Standard 2.0 has returned. (#3381)
Support had previously been removed in the 6.0 release, with the [community voicing concerns] (Microsoft.Data.SqlClient 6.0 and .Net Standard dotnet/SqlClient#3115).

Who Benefits:

Libraries that depend on MDS may seamlessly target any of the following frameworks:
- .NET Standard 2.0
- .NET Framework 4.6.2 and above
- .NET 8.0
- .NET 9.0
Applications should continue to target runtimes.
- The MDS .NET Standard 2.0 target framework support does not include an actual implementation, and cannot be used with a runtime.
- An application's build/publish process should always pick the appropriate MDS .NET/.NET Framework runtime implementation.
- Custom build/publish actions that incorrectly try to deploy the MDS .NET Standard 2.0 reference DLL at runtime are not supported.

Impact:

... (truncated)

6.1.0-preview1

This update brings the following changes over the previous release:

Added

Added packet multiplexing support to improve large data read performance. #2714 #3161 #3202
Added support for special casing with Fabric endpoints. #3084

Fixed

Fixed distributed transactions to be preserved during pooled connection resets. #3019.
Fixed application crash when the Data Source parameter begins with a comma. #3250.
Resolved synonym count discrepancies in debug mode. #3098.
Addressed warnings for down-level SSL/TLS versions. #3126.

Changed

Optimized binary size for AOT. #3091
Refined bulk copy operations to handle unmatched column names more effectively. #3205.
Enhanced SqlBulkCopy to explicitly identify mismatched column names. #3183.
Optimized outgoing SSPI blob handling using IBufferWriter<byte>. #2452.
Replaced byte[] with string for SNI to improve efficiency. #2790.
Code cleanup to remove SQL 2000 support #2839, #3206, #3217,
Connection pool design refactor for a modular connection pool design #3199
Updated various dependencies #3229, primarily:
- System.Text.Encodings.Web to v8.0.0
- System.Text.Json to v8.0.5
- Azure.Identity to v1.13.2
- Microsoft.Identity.Model.Json.Web.Tokens to v7.7.1
- Microsoft.Identity.Model.Protocols.OpenIdConnect to v7.7.1
Code merge towards a unified SqlClient project, aligning .NET Framework and .NET Core implementations. (#2957, #2963, #2984, #2982, #3023, #3015, #2967, #3164, #3163, #3171, #3182, #3179, #3156, #3213, #3232, #3236, #3231, #3241, #3246, #3247, #3222, #3255, #3254, #3259, #3264, #3256, #3251, #3275, #3277, #3263, #3292, #3208).
Test improvements include updates to test references, removal of hardcoded certificates, improved stability, and better coverage (#3041, #3034, #3130, #3128, #3181, #3060, #3184, #3033, #3186, #3025, #3230, #3237, #3059, #3061).

New Contributors

@emmanuel-ferdman made their first contribution in Update DockerLinuxTest/Program.cs reference dotnet/SqlClient#3041
@MaceWindu made their first contribution in Fix typo in Update 6.0.0-preview1.md dotnet/SqlClient#3134
@JNjenga made their first contribution in SqlBulkCopy: Explicitly state column name that mismatches(#3170) dotnet/SqlClient#3183
@Midhunnnk made their first contribution in Fix crash when Data Source starts with a comma dotnet/SqlClient#3250

6.0.4

This update brings the below changes over the 6.0.3 release:

Added

App Context Switch for Ignoring Server-Provided Failover Partner

What Changed:

A new app context switch Switch.Microsoft.Data.SqlClient.IgnoreServerProvidedFailoverPartner was introduced to let the client ignore server-provided failover partner info in Basic Availability Groups (BAGs). When the switch is enabled, only the failover partner specified in the connection string is used; server-supplied partner values are skipped. This context switch was introduced in PR #3703.

Who Benefits:

Applications connecting to SQL Server BAGs using TCP and custom ports, especially where the server's provided partner name lacks the protocol, host, or port. This avoids connection failures when the server-provided partner is incompatible or incomplete.
Teams who manage availability groups and rely on client-side control of failover behavior in heterogeneous networking environments.

Impact:

If your environment might be affected (i.e., you operate a BAG with custom ports, or have experienced failures after failover), you can enable the new switch in your application:

AppContext.SetSwitch("Switch.Microsoft.Data.SqlClient.IgnoreServerProvidedFailoverPartner", true);

Then, ensure your connection string includes your preferred failover partner (with correct tcp:host,port) so that the client uses that instead of the server's suggestion.
Without enabling this, by default, the client continues to prefer the server-provided partner, maintaining backwards compatibility.

Target Platform Support

.NET Framework 4.6.2+ (Windows ARM64, Windows x64, Windows x86)
.NET 8.0+ (Linux, macOS, Windows ARM64, Windows x64, Windows x86)

Dependencies

.NET Framework

Azure.Identity 1.14.2
Microsoft.Bcl.Cryptography 8.0.0
Microsoft.Data.SqlClient.SNI 6.0.2
Microsoft.Extensions.Caching.Memory 8.0.1
Microsoft.IdentityModel.JsonWebTokens 7.5.0
Microsoft.IdentityModel.Protocols.OpenIdConnect 7.5.0
System.Buffers 4.5.1
System.Security.Cryptography.Pkcs 8.0.1
System.Text.Encodings.Web 8.0.0
System.Text.Json 8.0.5
System.Data.Common 4.3.0

.NET 8

Azure.Identity 1.14.2
... (truncated)

6.0.3

This update brings the below changes over the previous stable release:

Fixed

Fixed an issue where a Custom SqlClientAuthenticationProvider was being overwritten by default implementation. #3652
Fixed a concurrency issue in connection pooling where the number of active connections could be lower than the configured maximum pool size. #3654

Changed

Updated MSAL usage as per code compliance requirements #3360
Updated SqlDecimal implementation to improve code compliance #3466
Updated Azure.Identity and related dependencies #3553

6.0.2

This update brings the below changes over the previous release:

Fixed

Fixed possible NullPointerException during socket receive #3283
Fixed reference assembly definitions for SqlJson APIs #3169
Fixed an error reading the output parameter of type JSON while executing stored procedure #3173

Changed

Updated the below dependencies:
- Updated Microsoft.Bcl.Cryptography from 9.0.0 to 9.0.4 for .NET 9 targeted dll. #3281
- Updated Microsoft.Extensions.Caching.Memory from 9.0.0 to 9.0.4 for .NET 9 targeted dll. #3281
- Updated System.Configuration.ConfigurationManager from 9.0.0 to 9.0.4 for .NET 9 targeted dll. #3281
- Updated System.Security.Cryptography.Pkcs from 9.0.0 to 9.0.4 for .NET 9 targeted dll. #3281

6.0.1

Released to NuGet.org on 2025-01-23

Breaking Changes

Removed support for .NET Standard. #2386
Removed support for .NET 6 #2927
Removed UWP (UAP) references. #2483
Removed SQL 2000 client-side debugging support for .NET Framework #2981, #2940

Added

JSON Support

JSON data type support is now available in Microsoft.Data.SqlClient v6.0. This release introduces SqlJson type available as an extension to System.Data.SqlDbTypes:

using System;
using System.Data.SqlTypes;
using System.Text.Json;

namespace Microsoft.Data.SqlTypes
{
    /// <summary>
    /// Represents the JSON data type in SQL Server.
    /// </summary>
    public class SqlJson : INullable
    {
        /// <summary>
        /// Parameterless constructor. Initializes a new instance of the SqlJson class which 
        /// represents a null JSON value.
        /// </summary>
        public SqlJson() { }

        /// <summary>
        /// Takes a <see cref="string"/> as input and initializes a new instance of the SqlJson class.
        /// </summary>
        /// <param name="jsonString"></param>
        public SqlJson(string jsonString) { }

        /// <summary>
        /// Takes a <see cref="JsonDocument"/> as input and initializes a new instance of the SqlJson class.
        /// </summary>
        /// <param name="jsonDoc"></param>
        public SqlJson(JsonDocument jsonDoc) { }

        /// <inheritdoc/>
        public bool IsNull => throw null;

        /// <summary>
        /// Represents a null instance of the <see cref="SqlJson"/> type.
 ... (truncated)

## 6.0.0-preview3.24332.3

## Breaking Changes
- Dropped support for .NET 6 [#2927](https://github.com/dotnet/SqlClient/pull/2927)
- Removed SQL 2000 client-side debugging support for .NET Framework [#2981](https://github.com/dotnet/SqlClient/pull/2981), [#2940](https://github.com/dotnet/SqlClient/pull/2940)

### Added
- Enabled NuGet package auditing via NuGet.org audit source [#3024](https://github.com/dotnet/SqlClient/pull/3024)
- Added support for .NET 9 [#2946](https://github.com/dotnet/SqlClient/pull/2946)
- Added dependency on System.Security.Cryptography.Pkcs:9.0.0 to address [SYSLIB0057](https://learn.microsoft.com/en-us/dotnet/fundamentals/syslib-diagnostics/syslib0057)[#2946](https://github.com/dotnet/SqlClient/pull/2946)
- Added dependency on Microsoft.Bcl.Cryptography:9.0.0 [#2946](https://github.com/dotnet/SqlClient/pull/2946)
- Added missing SqlCommand_BeginExecuteReader code sample [#3009](https://github.com/dotnet/SqlClient/pull/3009)
- Added support for SqlConnectionOverrides in OpenAsync() API [#2433](https://github.com/dotnet/SqlClient/pull/2433)
- Added localization in Czech, Polish, and Turkish [#2987](https://github.com/dotnet/SqlClient/pull/2987)

### Fixed
- Reverted default value of UseMinimumLoginTimeout context switch to 'true' [#2419](https://github.com/dotnet/SqlClient/pull/2419)
- Added missing DynamicallyAccessedMembers attributes in .NET Runtime reference assemblies. [#2946](https://github.com/dotnet/SqlClient/pull/2946)
- Synchronized dependencies of Reference Assemblies with Runtime assemblies [#2878](https://github.com/dotnet/SqlClient/pull/2878)
- Fixed lazy initialization of the _SqlMetaData hidden column map for .NET Framework [#2964](https://github.com/dotnet/SqlClient/pull/2964)

### Changed
- Updated Microsoft.Extensions.Caching.Memory to 9.0.0 for all frameworks [#2946](https://github.com/dotnet/SqlClient/pull/2946)
- Updated System.Configuration.ConfigurationManager to 9.0.0 [#2946](https://github.com/dotnet/SqlClient/pull/2946)
- Updated docs to use absolute links [#2949](https://github.com/dotnet/SqlClient/pull/2949)
- Removed System.Text.Json dependency from .NET 8 [#2930](https://github.com/dotnet/SqlClient/pull/2930)

### Contributors

Thanks to the following public contributors. Their efforts toward this project are very much appreciated.

- @MichelZ
- @EamonHetherton
- @edwardneal
- @deadlydog
- @mus65

For detailed release notes, refer to [6.0.0-preview3.md](https://github.com/dotnet/SqlClient/blob/main/release-notes/6.0/6.0.0-preview3.md)

## 6.0.0-preview2.24304.8

### Added

- Added a dependency on System.Text.Json 8.0.5 for .NET 8+ and 6.0.10 for other versions [#2921](https://github.com/dotnet/SqlClient/pull/2921)
- Added support for [JSON native datatype](https://learn.microsoft.com/en-us/sql/t-sql/data-types/json-data-type?view=azuresqldb-current&preserve-view=true) currently in [Public preview in SQL Server](https://learn.microsoft.com/azure/azure-sql/database/doc-changes-updates-release-notes-whats-new?view=azuresql).  [#2916](https://github.com/dotnet/SqlClient/pull/2916), [#2892](https://github.com/dotnet/SqlClient/pull/2892), [#2891](https://github.com/dotnet/SqlClient/pull/2891), [#2880](https://github.com/dotnet/SqlClient/pull/2880), [#2882](https://github.com/dotnet/SqlClient/pull/2882), [#2829](https://github.com/dotnet/SqlClient/pull/2829), [#2830](https://github.com/dotnet/SqlClient/pull/2830)
- Added readme to nuget package [#2826](https://github.com/dotnet/SqlClient/pull/2826)

### Fixed

- Fixed scale serialization when explicitly set to 0 [#2411](https://github.com/dotnet/SqlClient/pull/2411)
- Fixed issue blocking GetSchema commands from being enrolled into the current transaction [#2876](https://github.com/dotnet/SqlClient/pull/2876)
- Adjusted retry logic to allow errors with negative numbers to be considered transient [#2896](https://github.com/dotnet/SqlClient/pull/2896)
- Fixed string formatting in OutOfMemory exceptions [#2797](https://github.com/dotnet/SqlClient/pull/2797)
- Increased routing attempts to 10 in netcore for LoginNoFailover and added routing support to LoginWithFailover to standardize routing behavior between netcore and netfx [#2873](https://github.com/dotnet/SqlClient/pull/2873)
- Restructured documentation into XML format so that it displays correctly in visual studio [#2836](https://github.com/dotnet/SqlClient/pull/2836), [#2822](https://github.com/dotnet/SqlClient/pull/2822), [#2834](https://github.com/dotnet/SqlClient/pull/2834), [#2851](https://github.com/dotnet/SqlClient/pull/2851), [#2863](https://github.com/dotnet/SqlClient/pull/2863), [#2864](https://github.com/dotnet/SqlClient/pull/2864), [#2865](https://github.com/dotnet/SqlClient/pull/2865), [#2869](https://github.com/dotnet/SqlClient/pull/2869), [#2871](https://github.com/dotnet/SqlClient/pull/2871), [#2837](https://github.com/dotnet/SqlClient/pull/2837), [#2821](https://github.com/dotnet/SqlClient/pull/2821)
- Fixed cleanup behavior when column decryption fails. Prevents leaving stale data on the wire for pooled connections [#2843](https://github.com/dotnet/SqlClient/pull/2843), [#2825](https://github.com/dotnet/SqlClient/pull/2825)

### Changed

- Updated System.Configuration.ConfigurationManager from 8.0.0 to 8.0.1 for .Net 8 [#2921](https://github.com/dotnet/SqlClient/pull/2921)
- Updated Microsoft.Extensions.Caching.Memory from 8.0.0 to 8.0.1 for .Net 8 [#2921](https://github.com/dotnet/SqlClient/pull/2921)
- Code Health Improvements [#2915](https://github.com/dotnet/SqlClient/pull/2915), [#2844](https://github.com/dotnet/SqlClient/pull/2844), [#2812](https://github.com/dotnet/SqlClient/pull/2812), [#2805](https://github.com/dotnet/SqlClient/pull/2805), [#2897](https://github.com/dotnet/SqlClient/pull/2897), [#2376](https://github.com/dotnet/SqlClient/pull/2376), [#2814](https://github.com/dotnet/SqlClient/pull/2814), [#2889](https://github.com/dotnet/SqlClient/pull/2889), [#2885](https://github.com/dotnet/SqlClient/pull/2885), [#2854](https://github.com/dotnet/SqlClient/pull/2854), [#2835](https://github.com/dotnet/SqlClient/pull/2835), [#2442](https://github.com/dotnet/SqlClient/pull/2442), [#2820](https://github.com/dotnet/SqlClient/pull/2820), [#2831](https://github.com/dotnet/SqlClient/pull/2831), [#2907](https://github.com/dotnet/SqlClient/pull/2907), [#2910](https://github.com/dotnet/SqlClient/pull/2910), [#2898](https://github.com/dotnet/SqlClient/pull/2898), [#2928](https://github.com/dotnet/SqlClient/pull/2928), [#2929](https://github.com/dotnet/SqlClient/pull/2929), [#2936](https://github.com/dotnet/SqlClient/pull/2936), [#2939](https://github.com/dotnet/SqlClient/pull/2939)

## New Contributors
* @Markeli made their first contribution in https://github.com/dotnet/SqlClient/pull/2797
* @EamonHetherton made their first contribution in https://github.com/dotnet/SqlClient/pull/2411

For detailed release notes, refer to [6.0.0-preview2.md](https://github.com/dotnet/SqlClient/blob/main/release-notes/6.0/6.0.0-preview2.md)

## 6.0.0-preview1.24240.8

## [Preview Release 6.0.0-preview1.24240.8] - 2024-08-27

This update brings the below changes over the 5.2 release:

### Breaking Changes

- Removed support for .NET Standard. [#2386](https://github.com/dotnet/SqlClient/pull/2386)
- Removed UWP (uap) references. [#2483](https://github.com/dotnet/SqlClient/pull/2483)

### Added

- Added `TokenCredential` object to take advantage of token caching in `ActiveDirectoryAuthenticationProvider`. [#2380](https://github.com/dotnet/SqlClient/pull/2380)
- Added `DateOnly` and `TimeOnly` support to `DataTable` as a structured parameter. [#2258](https://github.com/dotnet/SqlClient/pull/2258)
- Added `Microsoft.Data.SqlClient.Diagnostics.SqlClientDiagnostic` type in .NET. [#2226](https://github.com/dotnet/SqlClient/pull/2226)
- Added scope trace for `GenerateSspiClientContext`. [#2497](https://github.com/dotnet/SqlClient/pull/2497), [#2725](https://github.com/dotnet/SqlClient/pull/2725)

### Fixed

- Fixed `Socket.Connect` timeout issue caused by thread starvation. [#2777](https://github.com/dotnet/SqlClient/pull/2777)
- Fixed pending data with `SqlDataReader` against an encrypted column. [#2618](https://github.com/dotnet/SqlClient/pull/2618)
- Fixed Entra authentication when using infinite connection timeout in `ActiveDirectoryAuthenticationProvider`. [#2651](https://github.com/dotnet/SqlClient/pull/2651)
- Fixed `GetSchema` by excluding unsupported engines due to lack of support for `ASSEMBLYPROPERTY` function. [#2593](https://github.com/dotnet/SqlClient/pull/2593)
- Fixed SSPI retry negotiation with default port in .NET. [#2559](https://github.com/dotnet/SqlClient/pull/2559)
- Fixed assembly path in .NET 8.0 and `.AssemblyAttributes`. [#2550](https://github.com/dotnet/SqlClient/pull/2550)
- Fixed certificate chain validation. [#2487](https://github.com/dotnet/SqlClient/pull/2487)
- Fixed clone of `SqlConnection` to include `AccessTokenCallback`. [#2525](https://github.com/dotnet/SqlClient/pull/2525)
- Fixed issue with `DateTimeOffset` in table-valued parameters, which was introduced in 5.2. [#2453](https://github.com/dotnet/SqlClient/pull/2453)
- Fixed `ArgumentNullException` on `SqlDataRecord.GetValue` when using user-defined data type on .NET. [#2448](https://github.com/dotnet/SqlClient/pull/2448)
- Fixed `SqlBuffer` and `SqlGuild` when it's null. [#2310](https://github.com/dotnet/SqlClient/pull/2310)
- Fixed `SqlBulkCopy.WriteToServer` state in a consecutive calls. [#2375](https://github.com/dotnet/SqlClient/pull/2375)
- Fixed null reference exception with `SqlConnection.FireInfoMessageEventOnUserErrors` after introducing the batch command. [#2399](https://github.com/dotnet/SqlClient/pull/2399)

### Changed

- Updated Microsoft.Data.SqlClient.SNI version to `6.0.0-preview1.24226.4`. [#2772](https://github.com/dotnet/SqlClient/pull/2772)
- Improved access to `SqlAuthenticationProviderManager.Instance` and avoid early object initiation. [#2636](https://github.com/dotnet/SqlClient/pull/2636)
- Removed undocumented properties of `Azure.Identity` in `ActiveDirectoryAuthenticationProvider`. [#2562](https://github.com/dotnet/SqlClient/pull/2562)
- Replaced `System.Runtime.Caching` with `Microsoft.Extensions.Caching.Memory`. [#2493](https://github.com/dotnet/SqlClient/pull/2493)
- Updated `EnableOptimizedParameterBinding` to only accept text mode commands. [#2417](https://github.com/dotnet/SqlClient/pull/2417)
- Updated `Azure.Identity` version from `1.10.3` to `1.11.4`. [#2577](https://github.com/dotnet/SqlClient/pull/2577)
- Updated `Azure.Core` version from `1.35.0` to `1.38.0`. [#2462](https://github.com/dotnet/SqlClient/pull/2462)
- Updated `Azure.Security.KeyVault.Keys` version from `4.4.0` to `4.5.0`. [#2462](https://github.com/dotnet/SqlClient/pull/2462)
- Updated `Microsoft.IdentityModel.JsonWebTokens` and `Microsoft.IdentityModel.Protocols.OpenIdConnect` from `6.35.0` to `7.5.0`. [#2429](https://github.com/dotnet/SqlClient/pull/2429)
- Removed direct dependency to `Microsoft.Identity.Client` to take the transient dependecy through `Azure.Identity`. [#2577](https://github.com/dotnet/SqlClient/pull/2577)
- Removed unnecessary references `Microsoft.Extensions.Caching.Memory` and `System.Security.Cryptography.Cng` after removing .NET Standard. [#2577](https://github.com/dotnet/SqlClient/pull/2577)
- Improved memory allocation when reader opened by `CommandBehavior.SequentialAccess` over the big string columns. [#2356](https://github.com/dotnet/SqlClient/pull/2356)
- Improved SSPI by consolidating the context generation to single abstraction and using memory/span for SSPI generation. [#2255](https://github.com/dotnet/SqlClient/pull/2255), [#2447](https://github.com/dotnet/SqlClient/pull/2447)
- Reverted the [#2281](https://github.com/dotnet/SqlClient/pull/2281) code changes on ManagedSNI. [#2395](https://github.com/dotnet/SqlClient/pull/2395)
- Updated assembly version to 6.0.0.0. [#2382](https://github.com/dotnet/SqlClient/pull/2382)
- Code health improvements: [#2366](https://github.com/dotnet/SqlClient/pull/2366), [#2369](https://github.com/dotnet/SqlClient/pull/2369), [#2381](https://github.com/dotnet/SqlClient/pull/2381), [#2390](https://github.com/dotnet/SqlClient/pull/2390), [#2392](https://github.com/dotnet/SqlClient/pull/2392), [#2403](https://github.com/dotnet/SqlClient/pull/2403), [#2410](https://github.com/dotnet/SqlClient/pull/2410), [#2413](https://github.com/dotnet/SqlClient/pull/2413), [#2425](https://github.com/dotnet/SqlClient/pull/2425), [#2428](https://github.com/dotnet/SqlClient/pull/2428), [#2440](https://github.com/dotnet/SqlClient/pull/2440), [#2443](https://github.com/dotnet/SqlClient/pull/2443), [#2450](https://github.com/dotnet/SqlClient/pull/2450), [#2466](https://github.com/dotnet/SqlClient/pull/2466), [#2486](https://github.com/dotnet/SqlClient/pull/2486), [#2521](https://github.com/dotnet/SqlClient/pull/2521), [#2522](https://github.com/dotnet/SqlClient/pull/2522), [#2533](https://github.com/dotnet/SqlClient/pull/2533), [#2552](https://github.com/dotnet/SqlClient/pull/2552), [#2560](https://github.com/dotnet/SqlClient/pull/2560), [#2726](https://github.com/dotnet/SqlClient/pull/2726), [#2751](https://github.com/dotnet/SqlClient/pull/2751), [#2811](https://github.com/dotnet/SqlClient/pull/2811)
 ... (truncated)

## 5.2.3

This update brings the following changes since the 5.2.2 release:

### Fixed

- Fixed possible `NullPointerException` during socket receive (PR [#3284](https://github.com/dotnet/SqlClient/pull/3284))
- Fixed inconsistencies between source and reference projects (PR [#3124](https://github.com/dotnet/SqlClient/pull/3124))
- Adjusted retry logic to allow errors with negative numbers to be considered transient (PR [#3185](https://github.com/dotnet/SqlClient/pull/3185))

### Changed

- Updated the following dependencies:
  - [System.Private.Uri](https://www.nuget.org/packages/System.Private.Uri) 4.3.2 - Avoid transitive [CVE-2019-0820](https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2019-0820) (PR [#3076](https://github.com/dotnet/SqlClient/pull/3076))
  - [Microsoft.Extensions.Caching.Memory](https://www.nuget.org/packages/Microsoft.Extensions.Caching.Memory/6.0.3) 6.0.1 to 6.0.3 - Avoid [CVE-2024-43483](https://github.com/advisories/GHSA-qj66-m88j-hmgj) (PR [#3280](https://github.com/dotnet/SqlClient/pull/3280))

## 5.2.2

## [Stable release 5.2.2] - 2024-08-27

### Fixed

- Fixed `AcquireTokenAsync` timeout handling for edge cases in `ActiveDirectoryAuthenticationProvider`. [#2650](https://github.com/dotnet/SqlClient/pull/2650)
- Fixed issue with `Socket.Connect` in managed SNI. [#2779](https://github.com/dotnet/SqlClient/pull/2779)
- Fixed path for `AssemblyAttributes` in obj folder causing NET 8.0 assembly to appear in NET 6.0 dll. [#2789](https://github.com/dotnet/SqlClient/pull/2789)
- Fixed SSPI retry negotiation with default port in .NET. [#2815](https://github.com/dotnet/SqlClient/pull/2815)
- Fixed `ArgumentNullException` on `SqlDataRecord.GetValue` when using user-defined data type on .NET.  [#2816](https://github.com/dotnet/SqlClient/pull/2816)
- Fixed pending data with `SqlDataReader` against an encrypted column. [#2817](https://github.com/dotnet/SqlClient/pull/2817)

### Changed

- Upgraded `Azure.Identity` version from 1.11.3 to 1.11.4 [#2648](https://github.com/dotnet/SqlClient/pull/2648) to address [CVE-2024-35255](https://github.com/advisories/GHSA-m5vv-6r4h-3vj9).
- Upgraded `Microsoft.Identity.Client` version from 4.60.0 to 4.61.3 [#2648](https://github.com/dotnet/SqlClient/pull/2648) to address [CVE-2024-35255](https://github.com/advisories/GHSA-m5vv-6r4h-3vj9).
- Added caching to `TokenCredential` objects to take advantage of token caching. [#2775](https://github.com/dotnet/SqlClient/pull/2775)

## 5.2.1

## [Stable release 5.2.1] - 2024-05-31

### Fixed

- Fixed connection errors on Linux when Data Source property contains both named instance and port [#2436](https://github.com/dotnet/SqlClient/pull/2436)
- Fixed `SqlConnection.FireInfoMessageEventOnUserErrors` when set to true throws an exception [#2505](https://github.com/dotnet/SqlClient/pull/2505)
- Fixed exception when using `DATETIMEOFFSET(n)` in a TVP if `n` is 1, 2, 3, or 4 [#2506](https://github.com/dotnet/SqlClient/pull/2506)
- Reverted PR [#1983](https://github.com/dotnet/SqlClient/pull/1983) which caused connection failure delays when using `OpenAsync` [#2507](https://github.com/dotnet/SqlClient/pull/2507)
- Fixed `SqlConnection.Clone()` to include `AccessTokenCallback` [#2527](https://github.com/dotnet/SqlClient/pull/2527)

### Changed

- Upgraded `Azure.Identity` version from 1.10.3 to 1.11.3 [#2492](https://github.com/dotnet/SqlClient/pull/2492), [#2528](https://github.com/dotnet/SqlClient/pull/2528)
- Upgraded `Microsoft.Identity.Client` version from 4.56.0 to 4.60.3 [#2492](https://github.com/dotnet/SqlClient/pull/2492)
- Code Health improvements: [#2467](https://github.com/dotnet/SqlClient/pull/2467)


## 5.2.0

## [Stable release 5.2.0] - 2024-02-28

### Added

- Added a new `AccessTokenCallBack` API to `SqlConnection`. [#1260](https://github.com/dotnet/SqlClient/pull/1260)
- Added `SqlBatch` support on .NET 6+ [#1825](https://github.com/dotnet/SqlClient/pull/1825), [#2223](https://github.com/dotnet/SqlClient/pull/2223),[#2371](https://github.com/dotnet/SqlClient/pull/2371), [#2373](https://github.com/dotnet/SqlClient/pull/2373)
- Added support of `SqlDiagnosticListener` on **.NET Standard**. [#1931](https://github.com/dotnet/SqlClient/pull/1931)
- Added new property `RowsCopied64` to `SqlBulkCopy`. [#2004](https://github.com/dotnet/SqlClient/pull/2004)
- Added support for the `SuperSocketNetLib` registry option for Encrypt on .NET on Windows. [#2047](https://github.com/dotnet/SqlClient/pull/2047)
- Added the ability to generate debugging symbols in a separate package file [#2137](https://github.com/dotnet/SqlClient/pull/2137)
- Added Workload Identity authentication support [#2159](https://github.com/dotnet/SqlClient/pull/2159), [#2264](https://github.com/dotnet/SqlClient/pull/2264)
- Added support for Big Endian systems [#2170](https://github.com/dotnet/SqlClient/pull/2170)
- Added support for Georgian collation [#2194](https://github.com/dotnet/SqlClient/pull/2194)
- Added Localization support on .NET [#2210](https://github.com/dotnet/SqlClient/pull/2110)
- Added .NET 8 support [#2230](https://github.com/dotnet/SqlClient/pull/2230)
- Added explicit version for major .NET version dependencies on System.Runtime.Caching 8.0.0, System.Configuration.ConfigurationManager 8.0.0, and System.Diagnostics. 
- DiagnosticSource 8.0.0 [#2303](https://github.com/dotnet/SqlClient/pull/2303)

### Changed

- Improved parsing buffered characters in `TdsParser`. [#1544](https://github.com/dotnet/SqlClient/pull/1544)
- Added Microsoft.SqlServer.Types to verify support for SqlHierarchyId and Spatial for .NET Core. [#1848](https://github.com/dotnet/SqlClient/pull/1848)
- Moved to new System.Data.SqlTypes APIs on **.NET 7** and up. [#1934](https://github.com/dotnet/SqlClient/pull/1934) and [#1981](https://github.com/dotnet/SqlClient/pull/1981)
- Removed reference to Microsoft.Win32.Registry since it's shipped starting with .NET 6.0. [#1974](https://github.com/dotnet/SqlClient/pull/1974)
- Changed **[UseOneSecFloorInTimeoutCalculationDuringLogin](https://learn.microsoft.com/sql/connect/ado-net/appcontext-switches#enable-a-minimum-timeout-during-login)** App Context switch default to **true** and extended its effect to .NET and .NET Standard. [#2012](https://github.com/dotnet/SqlClient/pull/2012)
- Updated `Microsoft.Identity.Client` version from 4.47.2 to 4.53.0. [#2031](https://github.com/dotnet/SqlClient/pull/2031), [#2055](https://github.com/dotnet/SqlClient/pull/2055)
- Switched to the new .NET [NegotiateAuthentication](https://learn.microsoft.com/en-us/dotnet/api/system.net.security.negotiateauthentication?view=net-7.0) API on .NET 7.0 and above for SSPI token negotiation using Managed SNI. [#2063](https://github.com/dotnet/SqlClient/pull/2063)
- Removed `ignoreSniOpenTimeout` in open connection process on Windows. [#2067](https://github.com/dotnet/SqlClient/pull/2067)
- Enforce explicit ordinal for internal `StringComparison` operations. [#2068](https://github.com/dotnet/SqlClient/pull/2068)
- Improved error messages when validating server certificates in managed SNI (Linux/macOS) [#2060](https://github.com/dotnet/SqlClient/pull/2060)
- Improved CPU usage when `AppContext` switches are in use [#2227](https://github.com/dotnet/SqlClient/pull/2227)
- Upgraded `Azure.Identity` dependency version to [1.10.3](https://www.nuget.org/packages/Azure.Identity/1.10.3) to address [CVE-2023-36414](https://github.com/advisories/GHSA-5mfx-4wcx-rv27), [#2189](https://github.com/dotnet/SqlClient/pull/2189)
- Changed Microsoft.IdentityModel.JsonWebTokens and Microsoft.IdentityModel.Protocols.OpenIdConnect version 6.24.0 to 6.35.0 [#2290](https://github.com/dotnet/SqlClient/pull/2290) to address [CVE-2024-21319](https://www.cve.org/CVERecord?id=CVE-2024-21319)
- Updated `Microsoft.Data.SqlClient.SNI` (.NET Framework dependency) and `Microsoft.Data.SqlClient.SNI.runtime` (.NET/.NET Standard dependency) version to `v5.2.0`. [#2363](https://github.com/dotnet/SqlClient/pull/2363), which includes removing dead code and addressing static analysis warnings
- Code health improvements: [#1198](https://github.com/dotnet/SqlClient/pull/1198), [#1829](https://github.com/dotnet/SqlClient/pull/1829), [#1943](https://github.com/dotnet/SqlClient/pull/1943), [#1949](https://github.com/dotnet/SqlClient/pull/1949), [#1959](https://github.com/dotnet/SqlClient/pull/1959), [#1985](https://github.com/dotnet/SqlClient/pull/1985), [#2071](https://github.com/dotnet/SqlClient/pull/2071), [#2073](https://github.com/dotnet/SqlClient/pull/2073), [#2088](https://github.com/dotnet/SqlClient/pull/2088), [#2091](https://github.com/dotnet/SqlClient/pull/2091), [#2098](https://github.com/dotnet/SqlClient/pull/2098), [#2121](https://github.com/dotnet/SqlClient/pull/2121), [#2122](https://github.com/dotnet/SqlClient/pull/2122), [#2132](https://github.com/dotnet/SqlClient/pull/2132), [#2136](https://github.com/dotnet/SqlClient/pull/2136), [#2144](https://github.com/dotnet/SqlClient/pull/2144), [#2147](https://github.com/dotnet/SqlClient/pull/2147), [#2157](https://github.com/dotnet/SqlClient/pull/2157), [#2164](https://github.com/dotnet/SqlClient/pull/2164), [#2166](https://github.com/dotnet/SqlClient/pull/2166), [#2168](https://github.com/dotnet/SqlClient/pull/2168), [#2186](https://github.com/dotnet/SqlClient/pull/2186), [#2254](https://github.com/dotnet/SqlClient/pull/2254), [#2288](https://github.com/dotnet/SqlClient/pull/2288), [#2305](https://github.com/dotnet/SqlClient/pull/2305), [#2317](https://github.com/dotnet/SqlClient/pull/2317)

### Fixed

- Fixed Always Encrypted secure enclave retry logic for async queries. [#1988](https://github.com/dotnet/SqlClient/pull/1988)
- Fixed activity correlator to continue use of same GUID for connection activity. [#1997](https://github.com/dotnet/SqlClient/pull/1997)
- Fixed behavior when error class is greater than 20 on connection retry. [#1953](https://github.com/dotnet/SqlClient/pull/1953)
- Fixed error message when symmetric key decryption failed using Always Encrypted. [#1948](https://github.com/dotnet/SqlClient/pull/1948)
- Fixed TransactionScope connection issue when Enlist is enable, Pooling is disabled and network connection type is Redirect. [#1960](https://github.com/dotnet/SqlClient/pull/1960)
- Fixed TDS RPC error on large queries in SqlCommand.ExecuteReaderAsync. [#1936](https://github.com/dotnet/SqlClient/pull/1936)
- Fixed throttling of token requests by calling AcquireTokenSilent. [#1925](https://github.com/dotnet/SqlClient/pull/1925)
- Fixed Linux code coverage result in Build proj. [#1950](https://github.com/dotnet/SqlClient/pull/1950)
- Fixed NullReferenceException in GetBytesAsync. [#1906](https://github.com/dotnet/SqlClient/pull/1906)
- Fixed Transient fault handling issue with OpenAsync. [#1983](https://github.com/dotnet/SqlClient/pull/1983)
- Fixed invariant mode checks. [#1917](https://github.com/dotnet/SqlClient/pull/1917)
- Fixed GC behavior in TdsParser by adding array rental capability in TryReadPlpUnicodeChars. [#1866](https://github.com/dotnet/SqlClient/pull/1866)
 ... (truncated)

## 5.2.0-preview5

## [Preview Release 5.2.0-preview5.24024.3] - 2024-01-24

This update brings the below changes over the previous release:

### Added

- Added .NET 8 support [#2230](https://github.com/dotnet/SqlClient/pull/2230)
- Added explicit version for major .NET version dependencies on System.Runtime.Caching 8.0.0, System.Configuration.ConfigurationManager 8.0.0, and System.Diagnostics.DiagnosticSource 8.0.0 [#2303](https://github.com/dotnet/SqlClient/pull/2303)
- Added the ability to generate debugging symbols in a separate package file [#2137](https://github.com/dotnet/SqlClient/pull/2137)

### Changed

- Changed Microsoft.IdentityModel.JsonWebTokens and Microsoft.IdentityModel.Protocols.OpenIdConnect version 6.24.0 to 6.35.0 [#2290](https://github.com/dotnet/SqlClient/pull/2290) to address [CVE-2024-21319](https://www.cve.org/CVERecord?id=CVE-2024-21319)

### Fixed

- Fixed connection to unsubscribe from transaction completion events before returning it to the connection pool [#2301](https://github.com/dotnet/SqlClient/pull/2301)
- Fixed InvalidCastException when reading an Always Encrypted date or time column [#2275](https://github.com/dotnet/SqlClient/pull/2275)
- Fixed token caching to prevent expired access tokens from being reused in a connection pool [#2273](https://github.com/dotnet/SqlClient/pull/2273)
- Code health improvements: [#2288](https://github.com/dotnet/SqlClient/pull/2288), [#2305](https://github.com/dotnet/SqlClient/pull/2305), [#2254](https://github.com/dotnet/SqlClient/pull/2254), [#2317](https://github.com/dotnet/SqlClient/pull/2317)

## 5.2.0-preview4.23342.2

## [Preview Release 5.2.0-preview4.23342.2] - 2023-12-08

### Added

- Added `SqlBatch` support on .NET 6+ [#1825](https://github.com/dotnet/SqlClient/pull/1825), [#2223](https://github.com/dotnet/SqlClient/pull/2223)
- Added Workload Identity authentication support [#2159](https://github.com/dotnet/SqlClient/pull/2159), [#2264](https://github.com/dotnet/SqlClient/pull/2264)
- Added Localization support on .NET [#2210](https://github.com/dotnet/SqlClient/pull/2110)
- Added support for Georgian collation [#2194](https://github.com/dotnet/SqlClient/pull/2194)
- Added support for Big Endian systems [#2170](https://github.com/dotnet/SqlClient/pull/2170)

### Changed

- Updated `Microsoft.Data.SqlClient.SNI` (.NET Framework dependency) and `Microsoft.Data.SqlClient.SNI.runtime` (.NET/.NET Standard dependency) version to `v5.2.0-preview1.23340.1`. [#2257](https://github.com/dotnet/SqlClient/pull/2257), which includes removing dead code and addressing TSA warnings
- Improved CPU usage when `AppContext` switches are in use [#2227](https://github.com/dotnet/SqlClient/pull/2227)
- Upgraded `Azure.Identity` dependency version to [1.10.3](https://www.nuget.org/packages/Azure.Identity/1.10.3) to address [CVE-2023-36414](https://github.com/advisories/GHSA-5mfx-4wcx-rv27), [#2188](https://github.com/dotnet/SqlClient/pull/2188)
- Improved error messages when validating server certificates in managed SNI (Linux/macOS) [#2060](https://github.com/dotnet/SqlClient/pull/2060)

### Fixed

- Fixed an issue when using the Authentication option, but not encrypting on .NET Framework where the server certificate was being incorrectly validated [#2224](https://github.com/dotnet/SqlClient/pull/2224)
- Fixed a deadlock problem for distributed transactions when on .NET [#2161](https://github.com/dotnet/SqlClient/pull/2161)
- Fixed an issue with connecting to named instances on named pipes in managed SNI (Linux/macOS)[#2142](https://github.com/dotnet/SqlClient/pull/2142)
- Fixed an issue when connecting to an invalid LocalDB name using managed SNI [#2129](https://github.com/dotnet/SqlClient/pull/2129)
- Fixed an `AccessViolationException` when using a SQL Express user instance [#2101](https://github.com/dotnet/SqlClient/pull/2101)
- Fixed a metadata query issue when connecting to Azure SQL Edge [#2099](https://github.com/dotnet/SqlClient/pull/2099)
- Fixed file version information for .NET and .NET Standard binaries[#2093](https://github.com/dotnet/SqlClient/pull/2093)
- Fixed the SPN sent for a named instance when using Kerberos authentication on Linux/macOS [#2240](https://github.com/dotnet/SqlClient/pull/2240)
- Various code improvements [#2091](https://github.com/dotnet/SqlClient/pull/2091), [#2098](https://github.com/dotnet/SqlClient/pull/2098), [#2121](https://github.com/dotnet/SqlClient/pull/2121), [#2122](https://github.com/dotnet/SqlClient/pull/2122), [#2132](https://github.com/dotnet/SqlClient/pull/2132), [#2136](https://github.com/dotnet/SqlClient/pull/2136), [#2144](https://github.com/dotnet/SqlClient/pull/2144), [#2147](https://github.com/dotnet/SqlClient/pull/2147), [#2157](https://github.com/dotnet/SqlClient/pull/2157), [#2164](https://github.com/dotnet/SqlClient/pull/2164), [#2166](https://github.com/dotnet/SqlClient/pull/2166), [#2168](https://github.com/dotnet/SqlClient/pull/2168), [#2186](https://github.com/dotnet/SqlClient/pull/2186)

## 5.2.0-preview3.23201.1

## [Preview Release 5.2.0-preview3.23201.1] - 2023-07-20

This update brings the below changes over the previous release:

### Added

- Added a new `AccessTokenCallBack` API to `SqlConnection`. [#1260](https://github.com/dotnet/SqlClient/pull/1260)
- Added support for the `SuperSocketNetLib` registry option for Encrypt on .NET on Windows. [#2047](https://github.com/dotnet/SqlClient/pull/2047)

### Fixed

- Fixed `SqlDataAdapter.Fill` and configurable retry logic issue on .NET Framework. [#2084](https://github.com/dotnet/SqlClient/pull/2084)
- Fixed `SqlConnectionEncryptOption` type conversion by introducing the `SqlConnectionEncryptOptionConverter` attribute when using **appsettings.json** files. [#2057](https://github.com/dotnet/SqlClient/pull/2057)
- Fixed th-TH culture info issue on Managed SNI. [#2066](https://github.com/dotnet/SqlClient/pull/2066)

### Changed

- Switched to the new .NET [NegotiateAuthentication](https://learn.microsoft.com/en-us/dotnet/api/system.net.security.negotiateauthentication?view=net-7.0) API on .NET 7.0 and above for SSPI token negotiation using Managed SNI. [#2063](https://github.com/dotnet/SqlClient/pull/2063)
- Removed `ignoreSniOpenTimeout` in open connection process on Windows. [#2067](https://github.com/dotnet/SqlClient/pull/2067)
- Enforce explicit ordinal for internal `StringComparison` operations. [#2068](https://github.com/dotnet/SqlClient/pull/2068)
- Code health improvements: [#1959](https://github.com/dotnet/SqlClient/pull/1959), [#2071](https://github.com/dotnet/SqlClient/pull/2071), [#2073](https://github.com/dotnet/SqlClient/pull/2073), [#2088](https://github.com/dotnet/SqlClient/pull/2088)

For detailed release notes, refer to [5.2.0-preview3.md](https://github.com/dotnet/SqlClient/blob/main/release-notes/5.2/5.2.0-preview3.md)

## 5.2.0-preview2.23159.1

## [Preview Release 5.2.0-preview2.23159.1] - 2023-06-08

This update brings the below changes over the previous release:

### Added

- Added new property `RowsCopied64` to `SqlBulkCopy`. [#2004](https://github.com/dotnet/SqlClient/pull/2004)

### Fixed

- Fixed mixed synchronization issue in managed SNI. [#1029](https://github.com/dotnet/SqlClient/pull/1029)
- Fixed issue with `SqlConnectionStringBuilder` property indexer not supporting non-string values. [#2018](https://github.com/dotnet/SqlClient/pull/2018)

### Changed

- Moved to new System.Data.SqlTypes APIs in **.NET 7** and upper. [1934](https://github.com/dotnet/SqlClient/pull/1934) and [#1981](https://github.com/dotnet/SqlClient/pull/1981)
- Changed **[UseOneSecFloorInTimeoutCalculationDuringLogin](https://learn.microsoft.com/sql/connect/ado-net/appcontext-switches#enable-a-minimum-timeout-during-login)** App Context switch default to **true** and extended its effect to .NET and .NET Standard. [#2012](https://github.com/dotnet/SqlClient/pull/2012)
- Updated `Microsoft.Identity.Client` version from 4.47.2 to 4.53.0. [#2031](https://github.com/dotnet/SqlClient/pull/2031), [#2055](https://github.com/dotnet/SqlClient/pull/2055) 
- Code health improvement: [#1985](https://github.com/dotnet/SqlClient/pull/1985)

For detailed release notes, refer to [5.2.0-preview2.md](https://github.com/dotnet/SqlClient/blob/main/release-notes/5.2/5.2.0-preview2.md)


## 5.2.0-preview1.23109.1

## [Preview Release 5.2.0-preview1.23109.1] - 2023-04-20

This update brings the below changes over the v5.1 release:

### Added

- Added support of `SqlDiagnosticListener` on **.NET Standard**. [#1931](https://github.com/dotnet/SqlClient/pull/1931)

### Fixed

- Fixed AE enclave retry logic for async queries. [#1988](https://github.com/dotnet/SqlClient/pull/1988)
- Fixed activity correlator to continue use of same GUID for connection activity. [#1997](https://github.com/dotnet/SqlClient/pull/1997)
- Fixed behavior when error class is greater than 20 on connection retry. [#1953](https://github.com/dotnet/SqlClient/pull/1953)
- Fixed error message when symmetric key decryption failed using Always Encrypted. [#1948](https://github.com/dotnet/SqlClient/pull/1948)
- Fixed TransactionScope connection issue when Enlist is enable, Pooling is disabled and network connection type is Redirect. [#1960](https://github.com/dotnet/SqlClient/pull/1960)
- Fixed TDS RPC error on large queries in SqlCommand.ExecuteReaderAsync. [#1936](https://github.com/dotnet/SqlClient/pull/1936)
- Fixed throttling of token requests by calling AcquireTokenSilent. [#1925](https://github.com/dotnet/SqlClient/pull/1925)
- Fixed Linux code coverage result in Build proj. [#1950](https://github.com/dotnet/SqlClient/pull/1950)
- Fixed NullReferenceException in GetBytesAsync. [#1906](https://github.com/dotnet/SqlClient/pull/1906)
- Fixed Transient fault handling issue with OpenAsync. [#1983](https://github.com/dotnet/SqlClient/pull/1983)
- Fixed invariant mode checks. [#1917](https://github.com/dotnet/SqlClient/pull/1917)
- Fixed GC behavior in TdsParser by adding array rental capability in TryReadPlpUnicodeChars. [#1866](https://github.com/dotnet/SqlClient/pull/1866)

### Changed

- Updated Azure Identity version from 1.7.0 to 1.8.0. [#1921](https://github.com/dotnet/SqlClient/pull/1921)
- Improved parsing buffered characters in `TdsParser`. [#1544](https://github.com/dotnet/SqlClient/pull/1544)
- Removed reference to Microsoft.Win32.Registry since it's shipped starting with .NET 6.0. [#1974](https://github.com/dotnet/SqlClient/pull/1974)
- Added Microsoft.SqlServer.Types to verify support for SqlHierarchyId and Spatial for .NET Core. [#1848](https://github.com/dotnet/SqlClient/pull/1848)
- Code health improvements:[#1943](https://github.com/dotnet/SqlClient/pull/1943)[#1949](https://github.com/dotnet/SqlClient/pull/1949)[#1198](https://github.com/dotnet/SqlClient/pull/1198)[#1829](https://github.com/dotnet/SqlClient/pull/1829)

For detailed release notes, refer to [5.2.0-preview1.md](https://github.com/dotnet/SqlClient/blob/main/release-notes/5.2/5.2.0-preview1.md)

## 5.1.8

This update brings the following changes since the [5.1.7](https://github.com/dotnet/SqlClient/blob/main/release-notes/5.1/5.1.7.md) release:

### Added

#### App Context Switch for Ignoring Server-Provided Failover Partner

*What Changed:*

- A new app context switch `Switch.Microsoft.Data.SqlClient.IgnoreServerProvidedFailoverPartner` was introduced to let the client ignore server-provided failover partner info in Basic Availability Groups (BAGs). When the switch is enabled, only the failover partner specified in the connection string is used; server-supplied partner values are skipped. This context switch was introduced in PR [#3704](https://github.com/dotnet/SqlClient/pull/3704).

*Who Benefits:*

- Applications connecting to SQL Server BAGs using TCP and custom ports, especially where the server's provided partner name lacks the protocol, host, or port. This avoids connection failures when the server-provided partner is incompatible or incomplete.
- Teams who manage availability groups and rely on client-side control of failover behavior in heterogeneous networking environments.

*Impact:*

- If your environment might be affected (i.e., you operate a BAG with custom ports, or have experienced failures after failover), you can enable the new switch in your application:

```c#
AppContext.SetSwitch("Switch.Microsoft.Data.SqlClient.IgnoreServerProvidedFailoverPartner", true);

Then, ensure your connection string includes your preferred failover partner (with correct tcp:host,port) so that the client uses that instead of the server's suggestion.
Without enabling this, by default, the client continues to prefer the server-provided partner, maintaining backwards compatibility.

Fixed

Fixed a bulk copy bug that incorrectly prepended a UTF-8 Byte-Order-Marker when processing row data. (#3617)

Changed

Modernized creation of Microsoft.Identity.Client.PublicClientApplication instances to use its builder pattern. (#3367)
Replaced use of undocumented .NET Framework internals when reading SqlDecimal values. (#3465)
Updated the following dependencies (#3754):
- Azure.Core 1.41.0 (Avoids transitive vulnerability)
- Azure.Identity 1.12.1
- Microsoft.Identity.Client 4.76.0

Target Platform Support

.NET Framework 4.6.2+ (Windows x86, Windows x64)
.NET 6.0+ (Windows x86, Windows x64, Windows ARM64, Windows ARM, Linux, macOS)
.NET Standard 2.0+ (Windows x86, Windows x64, Windows ARM64, Windows ARM, Linux, macOS)

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.NET Framework

Azure.Core 1.41.0
... (truncated)

5.1.7

This update brings the following changes since the 5.1.6 release:

Fixed

Fixed possible NullPointerException during socket receive (PR #3285)
Fixed inconsistencies between source and reference projects (PR #3180)

Changed

Updated the following dependencies:
- Microsoft.Data.SqlClient.SNI 5.1.1 to 5.1.2 for .NET Framework on Windows (PR #3294)
- Microsoft.Data.SqlClient.SNI.runtime 5.1.1 to 5.1.2 for .NET on Windows (PR #3294)
- Microsoft.Extensions.Caching.Memory 6.0.1 to 6.0.3 - Avoid CVE-2024-43483 (PR #3068)
- Microsoft.Extensions.Hosting 6.0.0 to 6.0.1 - Avoid transitive dependency on vulnerable System.Text.Json 6.0.0 (PR #3207)
- System.Private.Uri 4.3.2 - Avoid transitive CVE-2019-0820 (PR #3077)
- System.Text.Encodings.Web 6.0.0 to 6.0.1 - Avoid transitive downgrade for .NET Framework targets (PR #3279)
- System.Text.Json 6.0.11 - Avoid transitive dependencies on older vulnerable versions for .NET Framework targets (PR #3279)

5.1.6 [Stable release 5.1.6] - 2024-08-27

Fixed

Fixed Transient fault handling issue with OpenAsync. #1983 #2508
Fixed AcquireTokenAsync timeout handling for edge cases in ActiveDirectoryAuthenticationProvider. #2706
Fixed pending data with SqlDataReader against an encrypted column. #2618 #2818

Changed

Upgraded Azure.Identity version from 1.11.3 to 1.11.4 [#2649] ([5.1.6] | CVE | Update Azure.Identity from 1.11.3 to 1.11.4 dotnet/SqlClient#2649) [#2529] ([5.1.6] Updating Azure.Identity version to 1.11.3 dotnet/SqlClient#2529) to address CVE-2024-35255.
Upgraded Microsoft.Identity.Client version from 4.60.0 to 4.61.3 [#2649] ([5.1.6] | CVE | Update Azure.Identity from 1.11.3 to 1.11.4 dotnet/SqlClient#2649) [#2529] ([5.1.6] Updating Azure.Identity version to 1.11.3 dotnet/SqlClient#2529) to address CVE-2024-35255.
Added caching to TokenCredential objects to take advantage of token caching. #2776
Code health improvements: [#2490] ([5.1.6] SDL | Changing ReadXml to a more secure overload (#2147) dotnet/SqlClient#2490)

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--- updated-dependencies: - dependency-name: Microsoft.Data.SqlClient dependency-version: 6.1.3 dependency-type: direct:production update-type: version-update:semver-major ... Signed-off-by: dependabot[bot] <[email protected]>

Bump Microsoft.Data.SqlClient from 5.1.5 to 6.1.3

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--- updated-dependencies: - dependency-name: Microsoft.Data.SqlClient dependency-version: 6.1.3 dependency-type: direct:production update-type: version-update:semver-major ... Signed-off-by: dependabot[bot] <[email protected]>

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dependabot bot requested a review from steingran as a code owner November 21, 2025 06:36

dependabot bot added dependencies Dependency updates major Breaking changes - major version bump .NET Pull requests that update .NET code labels Nov 21, 2025

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Bump Microsoft.Data.SqlClient from 5.1.5 to 6.1.3 #56

Bump Microsoft.Data.SqlClient from 5.1.5 to 6.1.3 #56

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Bump Microsoft.Data.SqlClient from 5.1.5 to 6.1.3 #56

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Bump Microsoft.Data.SqlClient from 5.1.5 to 6.1.3 #56

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6.1.3

Added

App Context Switch for Ignoring Server-Provided Failover Partner

Fixed

Target Platform Support

Dependencies

.NET Framework 4.6.2+

6.1.2

Fixed

6.1.1

Fixed

Changed

6.1.0

Release Notes

Stable Release 6.1.0 - 2025-07-25

Added

Added dedicated SQL Server vector datatype support

Revived .NET Standard 2.0 target support

6.1.0-preview2

Preview Release 6.1.0-preview2.25178.5 - 2025-06-27

Added

Added dedicated SQL Server vector datatype support

Revived .NET Standard 2.0 target support

6.1.0-preview1

Added

Fixed

Changed

New Contributors

6.0.4

Added

App Context Switch for Ignoring Server-Provided Failover Partner

Target Platform Support

Dependencies

.NET Framework

.NET 8

6.0.3

Fixed

Changed

6.0.2

Fixed

Changed

6.0.1

Breaking Changes

Added

JSON Support

Fixed

Changed

Target Platform Support

DependenciesExpand commentComment on line R58ResolvedCode has comments. Press enter to view.

.NET Framework

5.1.7

Fixed

Changed

5.1.6

[Stable release 5.1.6] - 2024-08-27

Fixed

Changed

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