Bug Error: The process cannot access the file because it is being used by another process.

From time to time, after building scripts I get this error. I didn't have it before, probably it's this related to this alpha?



If you want me to provide any additional information, just let me know.

 

I have to mention that this error cannot be "cleared", I have to restart the editor every time it occurs.

 

I also frequently experience this problem in Unity 2020.3.3f1 using Visual Studio 2019. The file that becomes locked is seemingly random and when I do a powershell search for processes locking the file- Unity is the only process shown. So probably a thread or child process that didn't properly release its' lock I'd guess.

The only fix is to restart Unity. Happens multiple times a day. 10-15 min to re-open Unity each time. Wild.

 

Yep. Do you use burst?

 

I had similar problems outside of unity. This can often also be done with windows indexer lock files.