Win10 2004 defender identifies virus threat even though file had been deleted

  • Thread starter Thread starter J-G-Hall
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J-G-Hall

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Hello,


Some weird stuff with MS Security Virus & threat protection since upgrading to Win10 2004. It's identifying a current threat (PUA:Win32/InstallCore) that I cannot remove even though the file associated with the threat was previously deleted. The threat was first identified back on 7/3/2020 and that's when I manually deleted the file. Since then I've tried to remove the threat (associated with a non-existent file) in Virus & threat protection, but every time I rescan after removing, it reappears. Also, the Quick Scan is taking 10 to 15 minutes to complete. It gets to about 85% complete then seems to stop for awhile, before it finally completes (showing the threat).


Any suggestions for what I can try? Is there any way of resetting Defender to flush its record of threats and start over? I have tried installing Win10 2004 on top of Win10 2004 (retaining data and apps), but that makes no difference. I'd prefer not to do a full OS reinstall unless I absolutely have to.


Also, I temporarily installed Malwarebytes and ran a full scan -- it found no threats. It seems that Defender is stuck thinking there is still a threat.


Thanks in advance.

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