Windows Defender Offline for Windows 10

The computer will start reboot but hangs as windows starts to load, screen goes dark and then nothing happens.  (Have left it in that state for over an hour without anything changing.
 

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Last updated August 8, 2019 Views 735 Applies to:

Did you select to scan with Windows Defender Offline?

Have you scanned your PC with Windows Defender?

Try press Power button and let it turn off and then turn on your PC and see whether you are able to boot.

If you manage to boot, check event viewer and see whether is there any error related to this issue?

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Yes, I first scanned with Windows Defender.  Rebooted.  Then selected scan with Windows Defender Offline and the machine rebooted as it should, but did not complete, but hung with a black screen with intermittent activity of the hard drive.  I was finally able to get it to proceed by constantly entering my key pad code and right clicking with the mouse while it was rebooting.  I suspect the screen for sign in did not appear and thus it would not proceed without sign in.  Don't really know; just a guess.

Thanks for your response.

Paul

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Check the event viewer and see whether is there any event or log is there.

Did you manage to perform scan with Windows Defender Offline?

Open Feedback Hub and report this issue.

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I never was able to provoke this situation on my test machines. But from what I was able to track it down, it seems that a damaged boot environment or a locked hard disk is the root cause. See:  Windows 10: Defender Offline Scan boot loop – Part 2
Blogs: http://www.borncity.com/blog /(Ger) - and - http://borncity.com/win/ (EN)

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