Windows 11 Account unknown security identifier removal in group or user names

  • Thread starter Thread starter Fanaticism
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Fanaticism

Account Unknown(S-1-15-3-65536-1888954469-739942743-1668119174-2468466756-4239452838-1296943325-355587736-700089176)Does anyone know how to remove this account in group or user names? How this happened was I tried to give my pc (user) full control, and I hit the checkmark, for full control, and instead of hitting apply and ok, I accidentally hit the add button, and the unknown user popped up, I tried to delete it, and I stupidly and reluctantly, clicked through about 15 error messages. I then clicked out of group and user names and tried to open control panel and it wouldn’t let me. It gave me

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