I need acces from TrustedInstaller problem

[Windows 11]

Hi, I just redownloaded windows 11, i have two disk but every time when i want to download something or delete something in my disk its says: you need acces from TrustedInstaller, but when i want to allow for everything for my user in the security option a windows security error pops up and says: C:\DumpStack.log.tmp The process cannot access the file because it is being used by another process. But im the only one who is using this pc infact i just redownloaded windows 11. I dont know if it's the problem but i see an Account Unknown in the users, but i dont know what it is. Please help!

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