Windows 10: Safety after Defender removes a threat

Where I work and study outside my house the computers- some of them- have viruses that cause my flash to read everything as shortcuts. Including today this has happened to me three times and their own program, webroot is unable to discover and remove the cause. When I get back and use defender I have little issue in identifying and removing the threat but then it makes the files in the flash hidden. My main question is if it's safe to use the flash after the threat's been removed but not formatted? Are there any risks in doing so?

:)

 

Windows Defender Detect threat Trojan:Win32/Pynamer.B!ac

Hi.

I encounter that my PC always have notification of Windows Defender that my PC have a threat, this is Trojan:Win32/Pynamer.B!ac.

It will happen ALWAYS when i open my PC. It always appear on my notification, but after 10secs it will quarantine this threat.

How to remove this notification/virus on my PC.

I already Scan my PC using of the following:

• Microsoft Safety Scanner
  
  

• Windows Defender

• Malwarebytes

• Malwarebytes Adwcleaner

Hope you will help me guys.

Thankyou.

 

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

 

Defender wont remove the threats

I ran Windows Defender full scan which took over 15 hours to completed. It indicates that there are 20 threats which I want to remove. However Windows Defender gets stuck and does not remove any of them. It has been running for over 20 hours and nothing.
What can I do to remove these threats.

Thanks