Windows 10: Windows Defender unable to scan

Hello everyone. I tried to download a malicious file (I did not know) that asked me to (disable) my antivirus. So once the file was installed I could not use my windows defender. It gives the error code (0x80070424). Please help me. Thank you.

:)

 

Windows defender custom scan does not scan external drives

I have Defender Windows 10. I tried using custom scan to select and scan external drives. The screen listing the drives comes up, but the "OK" button remains grayed out so unable to scan any of the drives listed. Any suggestions would be appreciated.

 

defender scans

Hi Ian,

Thanks for posting your query on Microsoft Community.

This issue might occur if you have set any task scheduler for Windows Defender.

I suggest you to delete the task for Windows defender and check if it helps.

Follow the below steps:

• 
  Search and open Schedule tasks.
  
• 
  In the left-hand menu, open the Task Scheduler Library, then select
  Microsoft >Windows >Windows Defender.
  
• 
  Double-click Windows Defender Scheduled Scan.
  
• 
  Select the Triggers panel, then select Delete.
  

Hope it helps, reply to us with the status of your issue. We will be happy to assist you.

 

Windows defender custom scan does not scan external drives

I tried the custom scan in Defender Windows 10. It brings up the list of drives but the "OK" button remains grayed out when I select any drive in the list, so still unable to scan external drives... Any suggestion would be appreciated.