Windows 8 and 8.1 Forums


Windows Defender not updating malware definitions

  1. #1


    Posts : 9
    win 8 pro

    Windows Defender not updating malware definitions


    Hi there,

    Windows Defender won't update its anti malware definitions... as of now they are a few days old. Manually pressing the "update" button won't do a thing. Also, when trying to update from the cmd prompt, I am told that no update is needed since everything is up-to-date. Also see the attached screenshot.

    Does anybody know what's going on?

    Click image for larger version

      My System SpecsSystem Spec

  2. #2


    Posts : 22,582
    64-bit Windows 10


    Hello Boss,

    Do you have all of your Windows Updates installed?

    Windows Update - Check for and Install in Windows 8
      My System SpecsSystem Spec

  3. #3


    Posts : 9
    win 8 pro


    Hi Brink,
    no, I've some pending updates in the queue, but they're optional though, and non of which explicitly relates to Windows Defender. But just now, I was able to install the latest definitions. Don't know what I've done differently...
      My System SpecsSystem Spec

  4. #4


    Posts : 22,582
    64-bit Windows 10


    Odd, but glad to hear that you were able to update it now.

    I usually install my Windows Defender definition updates through Windows Update instead.
      My System SpecsSystem Spec

  5. #5


    United Kingdom
    Posts : 39
    Windows 8 Pro With Media Centre


    The same thing happened to me but now updating normally - not quite sure why though.....
      My System SpecsSystem Spec

Windows Defender not updating malware definitions
Related Threads
I am using Windows 8 not 8.1 A few days ago I shut down my computer. I didn't notice that it never actually turned off like usual until the next day. I had to hold the power button to turn it off. It started back up that day without any apparent issues and Windows Updates and Defender...
I have been using my laptop with Windows Defender for a while and have updated it's definition archive everytime it tells me too. Recently, I thought that I should probably switch to a new anti-virus to help with performance. So I installed Bitdefender's Antivirus Free Edition. However, now...
Hello, Today, when I insert my Transcend 1 TB Hard Drive into the USB slot, Windows Defender has detected a Malware on the Hard Drive. It asks me to restart my laptop to clean it so I restart it. But after restarting and I insert my hard drive again, the Malware is again detected and asks to...
It is advisable not to do a full scan for the moment. There was a problem in the latest definition update and in some cases after doing a full scan, if it completes, Windows Defender has been turned off. Microsoft is aware of the problem and is working on it.
today, when i opened the windows defender i saw my PC status at risk and when i tried to update it's virus definitions i couldn't complete, it says network connection but i could connect to website download anything without any interuption. i even tried to update virus definitions through windows...
Would like Defender virus definitions to update automatically it says it will under SETTINGS but it doesn't something basic? thx Kevin
Just trying to figure out an issue where my WD isn't updating definitions, even though following the security portal here: Get the latest definitions - Microsoft Malware Protection Center There are often times where I notice half a dozen updates being posted throughout the day, yet neither WD...
Eight Forums Android App Eight Forums IOS App Follow us on Facebook