Windows 10: impossible remove threat from windows defender "allowed threats"

Windows defender notify me threat, but when i try to remove, the threat was moved in permitted threats and when i try to not allow end remove, uac ask me to proceed but the threat wasn't remove.





:)

 

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

 

Is restoring a quarantined threat the same as allowing the threat?

My Windows defender scan reported a threat last week. I quarantined it. After a few days, I updated my defender virus definitions, restored the threat, and ran another scan (because I wanted to find out if it was a false positive). This new scan did not
report any threat.

However, under defender's threat history, allowed items, I see this threat listed. I do NOT want to allow the threat, just wanted to find out if the latest definitions would still reported the file as a threat. How should I do that? Thank you. I am using
windows 10.

 

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.