I have a Windows .NET 8 Application and a .NET 8 plugin for AutoCAD.

Both solutions and their shared project were upgraded from .NET Framework with the migration assistant.

Both reference the same DataAccess project we use to connect with Azure databases and do CRUD operations. The migration assistant added the Microsoft.SqlServer.SqlManagementObjects package to the DataAccess project, which contains Microsoft.Data.SqlClient (v5.1.6)

The Windows desktop application runs fine.

The first problem I encountered with the plugin was the reference to Microsoft.Data.SqlClient could not be found. I also noticed that the plugin's debug output did not include the package DLLs, while the Windows application's output did. I did not find any settings that would cause this difference.

Windows App Output (partially shown):

Plugin output (partially shown), which only has the solution files and not supporting files:

To temporarily solve this issue, I copied all package files from the Windows desktop app output to the plugin output folder.

Afterward, when running the plugin, I received a different error.

Microsoft.Data.SqlClient is not supported on this platform

The platforms for the Windows app and the plugin are the same, as far as I can tell.

The configuration manager has all projects set to Any CPU for both the app and plugin.

Solutions to one or both of the above problems would be appreciated.