Windows 10 - Defender Offline Scan not working

say OK. Now, forgive me, please if I express ignorance regarding the tech terminology. I assume that, by GUI, you mean this:

And that you select the "Scan Now" option. Which is what I do. But then mine does actually run the scan.  Could it be some third party software or even some Windows Beta software that others have installed that I haven't?

Just a thought....because if we're all using the same software it is really bizarre.

This is what happens on mine after I say  "Yes" to all the prompts:

Sorry for the blur...ain't got the hang of this Kindle Fire cam yet but it says it is doing the offline scan.

Hi Cass,

I think what you are seeing is not the WDO GUI, but what I call the "Splash Screen".

That is the screen that appears as WDO prepares to run.

This is the the screen for WDO running.

WDO Running

The launching screen does appear to be an indication of something running,

but unless they have changed it, it is just WDO preparing to run.

How many ways can this thing fail? Ole's problem sounds altogether different!

Good Luck,  Glen

Hi,

Apologies for the confusion.  The problem that I posted is related to the original question on this thread from A. User (I appear to have the same problem):

"Win Defender Offline Scan not starting, not rebooting, nothing happens (?)"

Regarding the problem posted by Cass, I am not sure what is going on.  I have two other devices running Windows 10 1703, and I get the same exact response i.e. I only get what looks more like a splash screen, and then it reboots again.  

GlenProuty - what version of Windows 10 are you on?

My sense (for this second issue) is that there are two possibilities, given that many seem to have this problem:  1) On recent builds (i.e. 1703) this is "normal" i.e. the splash screen is actually the scan itself or 2) on recent builds, WDO is fubar and not working at all, and MS will have to acknowledge and fix this problem on future updates.

That is the screen for WD running sure 'nuff, Glenn. My screen above says "Defender Offline Scanning"

Here's a clearer picture I found on the Internet https://www.gigafree.org/wp-content/uploads/2016/03/Windows-Defender-offline-scan9.jpg

That green bar moves as the scan progresses.

Yes. The Splash Screen IS the WDO Scan itself. Once it finishes running your device will boot again and go back online.

The green bar moves as the Scan progresses.

See Scan Screen (Offline)