I'm trying to publish a WPF Application (to a folder) targeting .NET Core 3.1, using Publish Single File, targeting win-x86. The application publishes fine for Debug, but fails for Release. If I deselect Produce Single File, the publish works fine. I'm using Visual Studio 2019 (16.4.1 and preview 16.5.1)
I get this generic error when I publish:
Publish has encountered an error. Publish has encountered an error. We were unable to determine the cause of the error. Check the output log for more details.
A diagnostic log has been written to the following location: "C:\Users\username\AppData\Local\Temp\tmpD176.tmp"
Plus a not-so-helpful log file:
System.AggregateException: One or more errors occurred. ---> System.Exception: Publish has encountered an error. We were unable to determine the cause of the error. Check the output log for more details.
--- End of inner exception stack trace ---
at System.Threading.Tasks.Task.ThrowIfExceptional(Boolean includeTaskCanceledExceptions)
at System.Threading.Tasks.Task.Wait(Int32 millisecondsTimeout, CancellationToken cancellationToken)
at Microsoft.Publish.Framework.Model.DefaultPublishSteps.<>c__DisplayClass26_0.<IsBuildCompletedSuccessfully>b__2()
at System.Threading.Tasks.Task`1.InnerInvoke()
at System.Threading.Tasks.Task.Execute()
--- 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 Microsoft.Publish.Framework.Model.DefaultPublishSteps.<DefaultCorePublishStep>d__23.MoveNext()
--- 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 Microsoft.Publish.Framework.ViewModel.ProfileSelectorViewModel.<RunPublishTaskAsync>d__156.MoveNext()
---> (Inner Exception #0) System.Exception: Publish has encountered an error. We were unable to determine the cause of the error. Check the output log for more details. <---
System.Exception: Publish has encountered an error. We were unable to determine the cause of the error. Check the output log for more details.
I found this question that suggests that it might be an issue with Visual Studio timing out, though that issue is related to Azure. I also found this Github issue that showed a similar when I tried publishing with ReadyToRun.
We published with success a few weeks ago, with minimal changes. Could this be an issue with Visual Studio? I realize that this may be an issue with references and NuGet packages, but I don't really know where to start to get to the core of this issue... publishing doesn't provide any helpful information on what might be causing the issue. Any ideas?