Unable to build WiX 3.11 project with references in Visual Studio 2017

[jhumphries83]

Which version of WiX are you building with?
3.11.1701.0

Which version of Visual Studio are you building with (if any)?
Visual Studio 2017 (15.2)

Which version of .NET are you building with?
.NET 4.5

If the problem occurs when installing your packages built with WiX, what is the version of Windows the package is running on?
Windows 10 (Anniversary Update)

When adding a reference to a project within my solution I get the following build error:

Error		The "AssignTargetPath" task failed unexpectedly.
System.IO.FileLoadException: Loading this assembly would produce a different grant set from other instances. (Exception from HRESULT: 0x80131401)
   at Microsoft.Build.Utilities.TaskItem..ctor(ITaskItem sourceItem)
   at Microsoft.Build.Tasks.AssignTargetPath.Execute()
   at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute()
   at Microsoft.Build.BackEnd.TaskBuilder.<ExecuteInstantiatedTask>d__26.MoveNext()	AcceptanceTestConfigurationService.Installer	C:\Program Files (x86)\MSBuild\Microsoft\WiX\v3.x\wix2010.targets	2991	

The output window shows this information:

2>C:\Program Files (x86)\MSBuild\Microsoft\WiX\v3.x\wix2010.targets(845,5): error MSB4018: The "AssignProjectConfiguration" task failed unexpectedly.
2>System.IO.FileLoadException: Loading this assembly would produce a different grant set from other instances. (Exception from HRESULT: 0x80131401)
2>   at Microsoft.Build.Utilities.TaskLoggingHelper.LogMessage(MessageImportance importance, String message, Object[] messageArgs)
2>   at Microsoft.Build.Utilities.TaskLoggingHelper.LogMessageFromResources(MessageImportance importance, String messageResourceName, Object[] messageArgs)
2>   at Microsoft.Build.Tasks.AssignProjectConfiguration.Execute()
2>   at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute()
2>   at Microsoft.Build.BackEnd.TaskBuilder.<ExecuteInstantiatedTask>d__26.MoveNext()
2>Done building project "AcceptanceTestConfigurationService.Installer.wixproj" -- FAILED.

When I build the same project with Visual Studio 2015 it builds successfully.

[barnson]

One thing to try is to create a new .wixproj with the templates from the VS2017 WiX extension, as they have to accommodate the changes in MSBuild v15.

[jhumphries83]

i did try that - however I get the same issue. The project builds fine up until the point that I add a reference to a project within my solution.

[barnson]

We haven't received any other reports on this error code. Nobody has any suggestions on what could cause this but it seems something specific to your environment.

[hahalj]

I get exactly the same issue. Still haven't found any solution.

[hahalj]

Just tried to get this solved again. This is what I did:

1. Opened and rebuilt my original project - still same failure.
2. Opened another instance of VS2017 and created a new empty WiX-project, built it without anything else added - Success
3. Switched back to my own failing project and rebuilt it again - Success.

I've no clue to why it now works.

[srosam]

I also get this issue.
I'm using Visual Studio 2017 with the latest Wix toolset
I trued the above (posted by @hahalj with no success)

[djonasdev]

1+

[rseanhall]

Sounds like the situation described in this blog: https://blog.bugrapostaci.com/2017/02/08/loading-this-assembly-would-produce-a-different-grant-set-from-other-instances-exception-from-hresult-0x80131401/