Windows 10: windows defender scan

since 1803 update defender only lets me do quick scan, if I click on advanced defender closes

:)

 

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

Hi Joe,

to scan external drives using Windows Defender, follow the steps provided below.

• Open Windows Defender.
• Go to Settings tab.
• Select the Advanced option.
• tick the checkbox for Scan removable drives.

Regards.