A diagnostic log has been written to the following location

Question

I´m getting this error when I try to publish an Asp.Net MVC project to a web-hosting:

A diagnostic log has been written to the following location: C:\Users\MyUser\AppData\Local\Temp...

I´m using Visual Studio 2017 and in order to publish the project, I downloaded the PublishSettings from the hosting.

The .Net version is 4.6.1.

The log says that the publish failed due to build errors, but I see no build errors when I compile the solution. This is the log:

6/5/2018 11:39:20 AM System.AggregateException: One or more errors occurred. ---> System.Exception: Publish failed due to build errors. Check the error list 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.VisualStudio.Web.Publish.PublishService.VsWebProjectPublish.<>c__DisplayClass40_0.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.VisualStudio.ApplicationCapabilities.Publish.ViewModel.ProfileSelectorViewModel.d__108.MoveNext() ---> (Inner Exception #0) System.Exception: Publish failed due to build errors. Check the error list for more details.<---

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Solution

This happens when you have files seen in Solution Explorer(with yellow warning icon) but not exist in the project folder.

• Check your project folder add not existing files or delete them from solution explorer
• Check the "Output window", you will see problematic files.
• Delete temp files in AppData/Local/Temp