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After an update on 15 August (I think), one of the users (admin) gets a recurring screen (http://ventre-a-pattes.net/bug.jpg) and cannot work. Two other accounts (one admin, one not) do not have the problem, a third one (not admin) does too. I tried to uninstall all recent items, ran update again, nothing works. Thanks for any suggestion.
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Thank you for reaching out again. You might be able to fix this using Windows recovery mode.
From the login screen, press Shift while selecting Restart. If needed, repeatedly force a shutdown during boot to trigger Automatic Repair.
Navigate to Troubleshoot > Advanced Options > Command Prompt.
Enter the following commands:
dism /online /cleanup-image /restorehealth
sfc /scannow
After running the commands, close the Command Prompt and restart your computer.
Also, I have tried to end the processes running in the defective account and not in the working one. Did not work, but I most certainly did not find all of them.
No, and no need to, it reappears every few seconds for a very limited time.
Understood, thank you for following up. If the Task Manager disappears, is it possible to bring it back if you press the Alt+Tab key?
It does, but shows up something like two seconds between fifteen seconds blank.
