Windows 10: Windows Defender keeps showing a threat that is no longer there. How to get rid of it?

Windows Defender Win 10 build: 19045.3930 keeps showing an issue with a non-existent file just like this: https://answers.microsoft.com/en-us/windows/forum/all/windows-defender-keeps-showing-a-threat-that-is-no/867f9b86-bb32-4db8-8960-947cf32a1cdd The solution in the past was to delete a file in the defender's scan directory but unfortunately I can't seem to get access to the directory even when following the instruction in this thread: https://answers.microsoft.com/en-us/windows/forum/all/double-click-is-not-opening-windows-defenderscans/aa21da0d-6dd6-4fa8-8573-baa846f4454aUnfortunately bot

:)

 

Windows defender false positive - forced to allow threat

Windows defender has started to identify C:\Windows\System32\mshta.exe as a threat [normally reported as a Trojan Powessere.G]. I use mshta.exe to run an hta custom MsgBox - I have been hoping to keep using my current CustomMsgBox tool [batch file calling a vbs-hta file] until later this year when I hope to have had enough time to replace it with a PowerShell alternative.

Windows defender's notification lets me "allow the threat" but that seems to me to be a bigger security hole than is necessary - it will now ignore a potentially real intrusion when all I want to run is a genuine Windows component. My immediate problem is fixed but I would prefer to fix the false positive using the exclusions list.

I cleared the 'Allowed threats history' so I could use the exclusions list instead. I added C:\Windows\System32\mshta.exe to the file exclusions list and I checked that it had taken properly by checking the exclusions list both in the UI & in the Registry. But the exclusion made no difference, it continued to detect and block the exe.

I have repeated the attempt several times [by clearing the allowed threats list & exclusions list beforehand] and the results are the same every time
- allowing the threat works,
- using the exclusions list has no effect.

I studied the relevant tutorial but have not spotted an error in what I have been doing - Add or Remove Windows Defender Exclusions

Does anybody with experience of using the exclusions list to counter false positives have any suggestions for me?

Denis

 

Windows Defender not showing threats

Windows keeps telling me I have threats, so when I go the the Windows Security section of the Settings app, it says "Threats found. Start the recommended actions." When I click the button "Start actions", the little circle spins and then nothing happens.
If I click the button "See threat details", it takes me to a page that says "No recent actions". Somehow earlier today I was able to get it to show the viruses, and it said there were 273 of them. But now if I go back to the "See threat details", nothing shows
up. I'm worried that the viruses are blocking Windows Defender, how do I dig myself out of this hole?

 

WINDOWS DEFENDER IS NOT REMOVING THREATS

I'm having a problem with Windows Defender the threats found after I ran a full scan that last maybe around 10 hours cannot be removed by windows defender. I selected the remove option and it shows processing but after a while
the threats are still listed and active. I already ran a offline scan and a quick scan but neither fix the problem.

I already ran a secure boot and see if third-party apps are causing the problem but nothing works the threats are still listed and active. I checked the location of the file and manually deleted it even on my recycle bin but
the threats are still there and labeled as active. This very annoying. I think this is an error in the windows defender part because I installed Malwarebytes and ran a full scan which took a couple of hours and found nothing because like I've said I have deleted
the file location where the threats are.