MsBuild issue affects Reqnroll projects that use .NET 9.0.307 or .NET 8.0.416: Error MSB4216: Could not run the "ReplaceTokenInFileTask" task because MSBuild...

[gasparnagy]

Please note this issue affects all Reqnroll versions that is being used with .NET 9.0.307 or .NET 8.0.416. The issue is in MsBuild and the bug has been found already, but not released yet. (See MsBuild Issue 12751)

The error message is Error MSB4216: Could not run the "ReplaceTokenInFileTask" task because MSBuild could not create or connect to a task host with runtime "NET" and architecture "x64".

Unfortunately since .NET 9.0.307 and .NET 8.0.416 are the "latest" versions, using pipelines that install the latest frameworks are also affected (e.g. a task that installs .NET 9.0 as version: 9.0.x).

As discussed at the MsBuild issue, the workaround is to force the previous version (9.0.306 or 8.0.415). When both frameworks are installed, this can be done with a global.json file, like (note the rollForward setting!):

{
  "sdk": {
    "version": "9.0.306",
    "rollForward": "disable"
  }
}

Or on a pipeline to install the exact framework version.

We will update this issue here once there is an update.

See related issue ticket: #921

[gasparnagy]

A new version of .NET SDK with the fix was released: SDK 9.0.308.

See: https://github.com/dotnet/core/blob/main/release-notes/9.0/9.0.11/9.0.308.md

[gasparnagy]

Update: There is still no new version of .NET 8, so the problem might still be observed if you use .NET 8.0.416 (the latest .NET 8 version).

[gasparnagy]

The issue cannot be reproduced for .NET 8.0. (See dotnet/msbuild#12912) and it has been fixed in .NET 9.0.309, so we can close this issue now.