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Windows Defender Will Not Update


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#1 zombiewhacker

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Posted 13 December 2014 - 02:28 PM

While updating Windows Defender on my mom's brand new computer (less than ten days old, Win 8.1) I got this message:

 

"Virus and spyware definitions couldn't be updated."

 

"This app couldn't check for virus and spyware definition updates.  Check your Internet or network connection and try again."

 

"Click help for more information about this problem."

 

Problem is, my Internet connection is working fine.  I'm typing this message from that very computer with the Defender error message running in the background.

 

I tried restarting Windows once, only to be hit with some 27 updates before computer would reboot.  Upon reboot, no luck with Defender, so I shut down completely only to endure 25 more "updates."

 

Booted again.  Defender's still a no-go.  Did a System Restore to five days ago.  Defender still won't update.

 

This computer has seen very little action.  No downloads. No pop-ups or strange messages or odd computer behavior of any kind.   Defender was working/updating out of the box a week ago, but not now.

 

Suggestions?

 

UPDATE: I tried to close Defender by right clicking on window in task bar.  Defender will not close, and I get this pop-up message:

 

"Invalid Windows handle."

 

"Click help for more information about this problem."

 

Huh?


Edited by zombiewhacker, 13 December 2014 - 03:09 PM.


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#2 Broni

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Posted 13 December 2014 - 09:37 PM

See if you can do it manually: https://www.microsoft.com/security/portal/definitions/adl.aspx


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#3 quietman7

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Posted 13 December 2014 - 10:34 PM

Have you checked to make sure the Windows Defender Service (WinDefend) is started and set to Automatic?

w8.defender38.jpg

Services - Start, Stop, and Disable in Windows 8


Also see this...
How to Schedule Updates & Windows Defender Scans in Windows 8
How to Set Up Windows Defender to Scan on a Schedule in Windows 8 and 8.1
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#4 zombiewhacker

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Posted 14 December 2014 - 07:49 PM

Checking under Control Panel -> Administrative Tools - > Services:

 

Windows Defender Network is running and set on Manual.  Windows Defender Service is running and set on automatic.

 

Never touched these before.  Haven't made any changes to any Windows settings since last post. 



#5 quietman7

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Posted 14 December 2014 - 07:59 PM

How about manually updating as Broni suggested?
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#6 zombiewhacker

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Posted 15 December 2014 - 12:03 PM

Just did the manual update.  All appears well for now.  Definitions were silently updated in the background, then I successfully completed a quick scan with no threats detected.

 

Did my initial hiccup sound unusual or does it happen to Win 8 users all the time?


Edited by zombiewhacker, 15 December 2014 - 12:06 PM.


#7 Broni

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Posted 15 December 2014 - 12:05 PM

Good news :)

Just keep us posted if it happens again.


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#8 quietman7

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Posted 15 December 2014 - 12:46 PM

Did my initial hiccup sound unusual or does it happen to Win 8 users all the time?

Actually that issue seems to crop up periodically even with other operating systems.
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