Fast Deployement failing with VS2019, VS2017

[MihaMarkic]

Steps to Reproduce

1. Create new single page Xamarin project
2. set min. version to 6.0 (probably irrelevant)
3. run

Expected Behavior

Runs (in emulator).

Actual Behavior

After call to java.exe -jar ... the build output is this:

ADB0000:  Deployment failed
2>Xamarin.AndroidTools.AndroidDeploymentException: FastDevDirectoryCreationFailed
2>   at Xamarin.AndroidTools.AndroidDeploySession.WaitForRemoteDirCreation(String destinationPath, CancellationToken token) in E:\A\_work\1549\s\External\androidtools\Xamarin.AndroidTools\Sessions\AndroidDeploySession.cs:line 735
2>   at Xamarin.AndroidTools.AndroidDeploySession.<InstallAssemblies>d__116.MoveNext() in E:\A\_work\1549\s\External\androidtools\Xamarin.AndroidTools\Sessions\AndroidDeploySession.cs:line 569
2>--- End of stack trace from previous location where exception was thrown ---
2>   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
2>   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
2>   at Xamarin.AndroidTools.AndroidDeploySession.<FastDevAsync>d__113.MoveNext() in E:\A\_work\1549\s\External\androidtools\Xamarin.AndroidTools\Sessions\AndroidDeploySession.cs:line 471
2>--- End of stack trace from previous location where exception was thrown ---
2>   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
2>   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
2>   at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)
2>   at Xamarin.AndroidTools.AndroidDeploySession.<RunAsync>d__105.MoveNext() in E:\A\_work\1549\s\External\androidtools\Xamarin.AndroidTools\Sessions\AndroidDeploySession.cs:line 224
2>--- End of stack trace from previous location where exception was thrown ---
2>   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
2>   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
2>   at Xamarin.AndroidTools.AndroidDeploySession.<RunLoggedAsync>d__103.MoveNext() in E:\A\_work\1549\s\External\androidtools\Xamarin.AndroidTools\Sessions\AndroidDeploySession.cs:line 118
2>ADB0000: FastDevDirectoryCreationFailed
2>   at Xamarin.AndroidTools.AndroidDeploySession.WaitForRemoteDirCreation(String destinationPath, CancellationToken token) in E:\A\_work\1549\s\External\androidtools\Xamarin.AndroidTools\Sessions\AndroidDeploySession.cs:line 735
2>   at Xamarin.AndroidTools.AndroidDeploySession.<InstallAssemblies>d__116.MoveNext() in E:\A\_work\1549\s\External\androidtools\Xamarin.AndroidTools\Sessions\AndroidDeploySession.cs:line 569
2>--- End of stack trace from previous location where exception was thrown ---
2>   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
2>   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
2>   at Xamarin.AndroidTools.AndroidDeploySession.<FastDevAsync>d__113.MoveNext() in E:\A\_work\1549\s\External\androidtools\Xamarin.AndroidTools\Sessions\AndroidDeploySession.cs:line 471
2>--- End of stack trace from previous location where exception was thrown ---
2>   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
2>   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
2>   at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)
2>   at Xamarin.AndroidTools.AndroidDeploySession.<RunAsync>d__105.MoveNext() in E:\A\_work\1549\s\External\androidtools\Xamarin.AndroidTools\Sessions\AndroidDeploySession.cs:line 224
2>--- End of stack trace from previous location where exception was thrown ---
2>   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
2>   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
2>   at Xamarin.AndroidTools.AndroidDeploySession.<RunLoggedAsync>d__103.MoveNext() in E:\A\_work\1549\s\External\androidtools\Xamarin.AndroidTools\Sessions\AndroidDeploySession.cs:line 137
2>--- End of stack trace from previous location where exception was thrown ---
2>   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
2>   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
2>   at Xamarin.AndroidTools.AndroidDeploySession.<StartAsync>d__102.MoveNext() in E:\A\_work\1549\s\External\androidtools\Xamarin.AndroidTools\Sessions\AndroidDeploySession.cs:line 112
2>Done building project "App1.csproj" -- FAILED.
2>Build FAILED.

Version Information

Microsoft Visual Studio Community 2019
Version 16.0.2
VisualStudio.16.Release/16.0.2+28803.202
Microsoft .NET Framework
Version 4.7.03190

Installed Version: Community

Application Insights Tools for Visual Studio Package 9.0.20307.1
Application Insights Tools for Visual Studio

ASP.NET and Web Tools 2019 16.0.12311.10635
ASP.NET and Web Tools 2019

ASP.NET Web Frameworks and Tools 2019 16.0.12311.10635
For additional information, visit https://www.asp.net/

AvaloniaPackage Extension 1.0
AvaloniaPackage Visual Studio Extension Detailed Info

Azure App Service Tools v3.0.0 16.0.12311.10635
Azure App Service Tools v3.0.0

C# Tools 3.0.0-beta4-19170-01+1deafee3682da88bf07d1c18521a99f47446cee8
C# components used in the IDE. Depending on your project type and settings, a different version of the compiler may be used.

CodeRush for Roslyn 18.2.9.0
DevExpress CodeRush for Roslyn package.

CodeRush for Roslyn Tool Windows 18.2.9.0
DevExpress CodeRush for Roslyn Tool Windows package.

Common Azure Tools 1.10
Provides common services for use by Azure Mobile Services and Microsoft Azure Tools.

Extensibility Message Bus 1.1.77 (master@24013d5)
Provides common messaging-based MEF services for loosely coupled Visual Studio extension components communication and integration.

GitHub.VisualStudio 2.9.0.7614
A Visual Studio Extension that brings the GitHub Flow into Visual Studio.

Microsoft Continuous Delivery Tools for Visual Studio 0.4
Simplifying the configuration of Azure DevOps pipelines from within the Visual Studio IDE.

Microsoft JVM Debugger 1.0
Provides support for connecting the Visual Studio debugger to JDWP compatible Java Virtual Machines

Microsoft Library Manager 1.0
Install client-side libraries easily to any web project

Microsoft MI-Based Debugger 1.0
Provides support for connecting Visual Studio to MI compatible debuggers

Microsoft Visual Studio Tools for Containers 1.1
Develop, run, validate your ASP.NET Core applications in the target environment. F5 your application directly into a container with debugging, or CTRL + F5 to edit & refresh your app without having to rebuild the container.

Mono Debugging for Visual Studio 16.0.300 (573eda3)
Support for debugging Mono processes with Visual Studio.

NCrunch
Continuous Testing Tool for .NET
Copyright � 2010-2018 Remco Software Ltd

NuGet Package Manager 5.0.0
NuGet Package Manager in Visual Studio. For more information about NuGet, visit http://docs.nuget.org/.

ProjectServicesPackage Extension 1.0
ProjectServicesPackage Visual Studio Extension Detailed Info

ResourcePackage Extension 1.0
ResourcePackage Visual Studio Extension Detailed Info

ResourcePackage Extension 1.0
ResourcePackage Visual Studio Extension Detailed Info

SQL Server Data Tools 16.0.61903.25110
Microsoft SQL Server Data Tools

TypeScript Tools 16.0.10306.2001
TypeScript Tools for Microsoft Visual Studio

Visual Basic Tools 3.0.0-beta4-19170-01+1deafee3682da88bf07d1c18521a99f47446cee8
Visual Basic components used in the IDE. Depending on your project type and settings, a different version of the compiler may be used.

Visual F# Tools 10.4 for F# 4.6 16.0.0.0. Commit Hash: 809f41207b74a1356208f11b8fa3a15233734050.
Microsoft Visual F# Tools 10.4 for F# 4.6

Visual Studio Code Debug Adapter Host Package 1.0
Interop layer for hosting Visual Studio Code debug adapters in Visual Studio

Visual Studio Tools for Containers 1.0
Visual Studio Tools for Containers

Visual Studio Tools for Unity 4.0.0.5
Visual Studio Tools for Unity

VisualStudio.Mac 1.0
Mac Extension for Visual Studio

Xamarin 16.0.0.515 (d16-0@a3502d929)
Visual Studio extension to enable development for Xamarin.iOS and Xamarin.Android.

Xamarin Designer 4.17.4.418 (remotes/origin/d16-0@3d086e814)
Visual Studio extension to enable Xamarin Designer tools in Visual Studio.

Xamarin Templates 16.1.47 (31f664d)
Templates for building iOS, Android, and Windows apps with Xamarin and Xamarin.Forms.

Xamarin.Android SDK 9.2.0.5 (HEAD/292d27fa)
Xamarin.Android Reference Assemblies and MSBuild support.
Mono: mono/mono@5ad371dab1b
Java.Interop: xamarin/java.interop/d16-0@c987483
LibZipSharp: grendello/LibZipSharp/master@44de300
LibZip: nih-at/libzip@b95cf3f
MXE: xamarin/mxe@b9cbb535
ProGuard: xamarin/proguard@905836d
SQLite: xamarin/sqlite@325e91a
Xamarin.Android Tools: xamarin/xamarin-android-tools/d16-0@0a7edd6

Xamarin.iOS and Xamarin.Mac SDK 12.8.0.0 (0aa8452)
Xamarin.iOS and Xamarin.Mac Reference Assemblies and MSBuild support.

Log File

Excerpt:

MonoDroidLog: Information: 0: [D:NotifyPhase]:          Enumerating remote files
MonoDroidLog: Information: 0: [D:NotifyPhase]:          Determining required operations
MonoDroidLog: Information: 0: [D:NotifyPhase]:          Creating directories
MonoDroidLog: Information: 0: [D:NotifySync]:           SkipCreateDirectory  /storage/emulated/0/Android/data/APP_BUNDLE_ID/files/.__override__ 0
MonoDroidLog: Information: 0: [D:NotifyPhase]:          Uploading files
MonoDroidLog: Information: 0: [D:RunShellCommand]:      emulator-5556 "pm" "path" "APP_BUNDLE_ID"
MonoDroidLog: Information: 0: [D:RunShellCommand]:      emulator-5556 cd /data/data/APP_BUNDLE_ID/files/.__override__ || exit 1; for f in *; do echo $f; done;
MonoDroidLog: Information: 0: [D:Stat]:                 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__: ---------
MonoDroidLog: Information: 0: [D:RunShellCommand]:      emulator-5556 am broadcast -a "mono.android.intent.action.SEPPUKU" -c "mono.android.intent.category.SEPPUKU.APP_BUNDLE_ID" -n "APP_BUNDLE_ID/mono.android.Seppuku"
MonoDroidLog: Information: 0: [D:Stat]:                 0 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 1 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 2 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 3 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 4 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 5 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 6 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 7 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 8 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 9 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 10 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 11 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 12 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 13 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 14 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 15 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 16 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 17 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 18 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 19 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 20 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 21 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 22 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 23 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 24 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 25 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 26 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 27 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 28 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 29 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 30 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 31 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 32 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 33 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 34 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 35 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 36 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 37 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 38 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 39 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 40 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 41 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 42 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 43 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 44 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 45 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 46 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 47 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 48 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 49 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Information: 0: [D:Stat]:                 50 FileInfo for /data/data/APP_BUNDLE_ID/files/.__override__ : ---------
MonoDroidLog: Error: 0: [E:]:                     Deployment failed
Xamarin.AndroidTools.AndroidDeploymentException: FastDevDirectoryCreationFailed
   at Xamarin.AndroidTools.AndroidDeploySession.WaitForRemoteDirCreation(String destinationPath, CancellationToken token) in E:\A\_work\1549\s\External\androidtools\Xamarin.AndroidTools\Sessions\AndroidDeploySession.cs:line 735
   at Xamarin.AndroidTools.AndroidDeploySession.<InstallAssemblies>d__116.MoveNext() in E:\A\_work\1549\s\External\androidtools\Xamarin.AndroidTools\Sessions\AndroidDeploySession.cs:line 569
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Xamarin.AndroidTools.AndroidDeploySession.<FastDevAsync>d__113.MoveNext() in E:\A\_work\1549\s\External\androidtools\Xamarin.AndroidTools\Sessions\AndroidDeploySession.cs:line 471
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)
   at Xamarin.AndroidTools.AndroidDeploySession.<RunAsync>d__105.MoveNext() in E:\A\_work\1549\s\External\androidtools\Xamarin.AndroidTools\Sessions\AndroidDeploySession.cs:line 224
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Xamarin.AndroidTools.AndroidDeploySession.<RunLoggedAsync>d__103.MoveNext() in E:\A\_work\1549\s\External\androidtools\Xamarin.AndroidTools\Sessions\AndroidDeploySession.cs:line 118
MonoDroidLog: Information: 0: [I:]:                     Looking for Android SDK...
MonoDroidLog: Information: 0: [D:]:                     ValidateAndroidSdkLocation: `C:\Program Files (x86)\Android\android-sdk`, result=True
MonoDroidLog: Information: 0: [D:]:                     ValidateAndroidSdkLocation: `C:\Program Files (x86)\Android\android-sdk`, result=True
MonoDroidLog: Information: 0: [D:RunShellCommand]:      emulator-5556 "pm" "path" "com.android.shell"
MonoDroidLog: Information: 0: [D:RunShellCommand]:      emulator-5556 date +%s
MonoDroidLog: Information: 0: [D:RunShellCommand]:      emulator-5556 setprop "debug.mono.extra" "debug=127.0.0.1:29378:29379,timeout=1556027349,loglevel=0,server=y"
MonoDroidLog: Information: 0: [D:RunShellCommand]:      emulator-5556 getprop
MonoDroidLog: Information: 0: [D:RunShellCommand]:      emulator-5556 "echo" "-n" "${EMULATED_STORAGE_SOURCE}"
MonoDroidLog: Information: 0: [D:RunShellCommand]:      emulator-5556 "echo" "-n" "${EMULATED_STORAGE_TARGET}"
MonoDroidLog: Information: 0: [D:RunShellCommand]:      emulator-5556 am broadcast -a "mono.android.intent.action.EXTERNAL_STORAGE_DIRECTORY" -n "Mono.Android.DebugRuntime/com.xamarin.mono.android.ExternalStorageDirectory"
MonoDroidLog: Information: 0: [D:RunShellCommand]:      emulator-5556 am start -a "android.intent.action.MAIN" -c "android.intent.category.LAUNCHER" -n "APP_BUNDLE_ID/md585fc0a7bd27d0254c913e04e8d3c593b.HomeActivity"
MonoDroidLog: Information: 0: [D:RunShellCommand]:      emulator-5556 ps
MonoDroidLog: Information: 0: [D:GetLogCat]:            logcat -v time
MonoDroidLog: Information: 0: [D:RunShellCommand]:      emulator-5556 logcat -v time
MonoDroidLog: Information: 0: [D:RunShellCommand]:      emulator-5556 am force-stop APP_BUNDLE_ID
MonoDroidLog: Information: 0: [D:RunShellCommand]:      emulator-5556 setprop "debug.mono.connect" ""
MonoDroidLog: Information: 0: [D:RunShellCommand]:      emulator-5556 "pm" "path" "com.android.shell"
MonoDroidLog: Information: 0: [I:]:                     Tracking android devices stopped

Update: replaced real bundle id with APP_BUNDLE_ID

[MihaMarkic]

If I deselect Fast Deployment, then it works.

[MihaMarkic]

It might be project dependent, on another project it works just fine.

[dellis1972]

@MihaMarkic do you have the full log file? Also what emulator are you running this on? For some reason it can't create the override directory we need.

[MihaMarkic]

@dellis1972 It's latest one that comes with Android Studio - 28.0.25. I have all log files, but they don't say more, at least from what I understand. BTW what is the directory in question? This one:

/data/data/APP_BUNDLE_ID/files/.__override__

[dellis1972]

yes /data/data/APP_BUNDLE_ID/files/.__override__ is the directory it tries to create.
But it also creates /storage/emulated/0/Android/data/APP_BUNDLE_ID/files/.__override__.

Its odd it works for other projects and not for this particular one...

Is the debuggable attribute being added to the manifest in the obj/Debug/android/AndroidManifest.xml.

Disabling FastDev is a workaround, but its not ideal as the app needs to be rebuilt every time you make a change. So it will slow down the dev loop.

[MihaMarkic]

@dellis1972 Based on your comments I did some more tests. It seems that it was something related to that particular emulator instance. Tried another one and it worked. then tried wiping user data from the problematic one and now it works again. So, I guess, not really a xamarin problem.

[MagicAndre1981]

thanks, I also needed to uncheck fast deployment with 16.1 Preview. Thanks for the hint!

[MihaMarkic]

@MagicAndre1981 Note that in my case it was something wrong with android os emulator instance, not visual studio.

[MagicAndre1981]

I don't use emulator as I run Windows 10 in a VM and nested hw acceleration (HAXM, Hyper-V platform) is unsupported. I try to debug it on a tablet via ADB over Wifi/LAN and here it also fixed my issue.

[MihaMarkic]

@dellis1972 Based on @MagicAndre1981 case, this might be an issue with fast deployment after all? Should this issue be re-opened?

[MagicAndre1981]

I use custom ROMs for phone and tablet (x86) so there may be an issue with the ROMs so I can live with disabling fast deployment.

I found the issue while searching for "setprop "debug.mono.extra" "debug=127.0.0.1" this was last output before app deployment stopped.