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Question by Valexery · Aug 29, 2021 at 11:12 AM · importing problemsconsole errorsassemblies

Fixing "The type or namespace name 'NUnit' could not be found" in 2020.3.17f1

Hello everyone, I just did a totally fresh install of Unity (and Unity Hub) on a totally new PC, but for every new project I try to create in 2020.3.17f1 gives me about 450 errors.

All of the errors seem to be related to the folder Library\PackageCache\com.unity.test-framework@1.1.27\UnityEngine.TestRunner.

Already tried solutions:

 - Reimporting all assets (right click in project folder -> Reimport all).
 - Go to C:/Users/username/AppData/Local/Unity/cache/packages/packages.unity.com (The path that 
   is shown in the error) Delete all of those folders in that "packages.unity.com" folder. Let Unity 
   recompile the project.
 - Resetting packages to defaults in advanced tab of the package manager window.
 - Launching Unity Hub and the engine as admin.
 - Uninstalling and reinstalling Unity.
 - Deleting Unity folders in `AppData\Local, AppData\LocalLow, AppData\Roaming`

I'm using the Unity Hub 3.0.0-beta.4 if that makes any difference.


Edit: the problem has been fixed, look at the attached answer.


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Answer by Valexery · Aug 30, 2021 at 02:57 PM

UPDATE: deleting all Unity folders located in C:\Users\username\AppData\Local & C:\Users\username\AppData\LocalLow & C:\Users\username\AppData\Roaming and creating a new project seems to have fixed the problem. Keep in mind that deleting those folders will also delete your preferences in the editor.

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