Question 1000+ errors when creating a new project.

I recently downloaded Unity 2021.3.0f1 and when I create a new project, I immediately get 1000+ errors. How is this possible? And how to solve it?

 

Yaaaaay! YOU WIN!!!

Yeah, it's pretty annoying, and unfortunately very common, so common I have a copy/paste blurb:

Extra unwanted packages in new projects (collab, testing, rider and other junk):

https://forum.unity.com/threads/temp-unityengine-testrunner-dll-error.1133938/#post-7287748

About the fastest way I have found to make a project and avoid all this noise is to create the project, then as soon as you see the files appear, FORCE-STOP (hard-kill) Unity (with the Activity Manager or Task Manager), then go hand-edit the Packages/manifest.json file as outlined in the above post, then reopen Unity.

Sometimes the package system gets borked from all this unnecessary churn and requires the package cache to be cleared:

https://stackoverflow.com/questions/53145919/unity3d-package-cache-errors/69779122

 

Yes, I win. And thank you for the help! With your help, I removed the errors. Have a nice day.