powershell .net-core visual-studio-buildtools

Adding `dotnet-9.0-sdk` broke PowerShell script

After changing version of visualstudio2022buildtools from 117.8.3.0 to 117.13.1 and installing dotnet-9.0-sdk the following script started to error:

Add-Type -Path "C:\Program Files (x86)\Microsoft Visual Studio\2022\BuildTools\MSBuild\Current\Bin\Microsoft.Build.dll" [Microsoft.Build.Construction.SolutionFile]::Parse('C:/Test/Test.sln')

Exception calling "Parse" with "1" argument(s): "Could not load file or assembly 'System.Memory, Version=4.0.1.1, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51' or one of its dependencies. The system cannot find the file specified." At C:\Test\run.ps1:2 char:1 + [Microsoft.Build.Construction.SolutionFile]::Parse('C:/Test/Test ... + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : NotSpecified: (:) [], ParentContainsErrorRecordException + FullyQualifiedErrorId : FileNotFoundException

I tried to change 2022 in the script to 2019 and 2017 - the same error. Tried with downloaded Microsoft.Build.dll 17.11.4 and 17.13.9 - the same error. So, I assume that the culprit here is the additional version of the SDK.

Solution

I'm unclear on the exact problem, but you report that upgrading your PowerShell (Core) 7 version to 7.5.0 solved the problem.

Observations about your symptom:

Since your script tries to load a .NET assembly in-process into your PowerShell session (using Add-Type), the .NET / .NET Framework version underlying the session matters.
The assembly version stated in the error message, 4.0.1.1, implies that an attempt is made to load the (legacy) .NET Framework System.Memory.dll assembly, which is located at C:\WINDOWS\System32\WindowsPowerShell\v1.0\system.memory.DLL, which I would expect to be the case if you run your script from Windows PowerShell (the legacy, ships-with-Windows, Windows-only edition of PowerShell whose latest and last version is 5.1), given that it builds on the legacy, Windows-only .NET Framework.
By contrast, PowerShell (Core) 7 builds on .NET, the modern, cross-platform successor to .NET Framework, and the current stable version as of this writing, v7.5.0, builds on and comes bundled with .NET 9.0.1; the current preview version, v7.6.0-preview.3, builds on .NET 9.0.2, which matches the .NET SDK reference in your screenshot.