Sounds as broken-installation; Does it happened after any visible steps for you? Like experience with 'system restore point', 'update to another Windows build' (or another OS?), any backup-software as revert to certain date, installed any other security software?
If not visible any reasons (and 'clean installation' is not fix) -> maybe good to re-check that after restart system -> still trouble. And re-check that still possible to use system folders (like ProgramData for Windows) and so.
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