How to configure project to use the managed (CoreCLR) debugger?

[loharsv23_mfg]

Facing this error while debugging plugin into Inventor 2025. 
Also cant open properties of project file to configure debugging.

[TylerWarner33]

@loharsv23_mfg, can you provide more info about your plugin? C# or VB.NET? Can you provide your .csproj or .vbproj file (excluding any confidential information)?

[loharsv23_mfg]

Plugin is developed in C#.
.NET v4.8 is used as it was developed for older versions of inventor.
Currently I have access to inventor 2025.  

[TylerWarner33]

.NET Framework 4.8 must be migrated to .NET 8 for use with Inventor 2025+.

You can download the '.NET Upgrade Assistant' extension within Visual Studio to do this for you.
'Extensions' tab => 'Manage Extensions' => '.NET Upgrade Assistant' => 'Install'

Once installed:

Right-click the project within Visual Studio => 'Upgrade' => 'In-place project upgrade' => '.NET 8' => Select all components

Once completed, the project file should have:

<TargetFramework>net8.0-windows</TargetFramework>