Windows 10: Windows defender update fails.

Discus and support Windows defender update fails. in Windows 10 Updates and Activation to solve the problem; Gonna try a disk cleanup. See if that will work Discussion in 'Windows 10 Updates and Activation' started by lvgandhi, Dec 11, 2017.

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  1. ANTJAC
    AntJac Win User

    Windows defender update fails.


    Gonna try a disk cleanup. See if that will work
     
    AntJac, Dec 11, 2017
    #16
  2. THRASIVOULOS
    Thrasivoulos Win User

    don't . as I already said I had a clean install of windows yesterday. my windows are less than 24 hours new on my pc
     
    Thrasivoulos, Dec 11, 2017
    #17
  3. SCOTTYBOY99
    Scottyboy99 Win User
    same issue on .221 which has just been released
     
    Scottyboy99, Dec 11, 2017
    #18
  4. GOBBO
    Gobbo Win User

    Windows defender update fails.

    Yep, same behavior.
     
    Gobbo, Dec 11, 2017
    #19
  5. EDTITTEL
    EdTittel Win User
    I've found that if WU doesn't do the job for Defender updates, you can often update from inside the Virus Protection portion of the Windows Defender Security Center. If you click on "Protection updates" you'll get to a screen where you can click to download updates. Even when WU balks, this function often works for me. Hope it does likewise for you.
    HTH,
    --Ed--

    PS: if that doesn't work, I'd recommend trying the Windows Update MiniTool (WUMT) next. You can download it from MajorGeeks.com.
     
    EdTittel, Dec 11, 2017
    #20
  6. SCOTTYBOY99
    Scottyboy99 Win User
    Good suggestion but tried earlier and it gives a fatal error on install
     
    Scottyboy99, Dec 11, 2017
    #21
  7. GOBBO
    Gobbo Win User
    Ty, but that's not working for me, I still get an error.

    Even updating signatures via CLI is failing.
     
    Gobbo, Dec 11, 2017
    #22
  8. SCOTTYBOY99
    Scottyboy99 Win User

    Windows defender update fails.

    It’s got to be a flakey server issue somewhere
     
    Scottyboy99, Dec 11, 2017
    #23
  9. ANTJAC
    AntJac Win User
    Sorry but what is CLI?
     
    AntJac, Dec 11, 2017
    #24
  10. EDTITTEL
    EdTittel Win User
    CLI = Command Line Interface. Used to mean "stuff from inside the Command Prompt window," but with PowerShell in the picture now, it could mean either cmd.exe or PowerShell windows at work. HTH,
    --Ed--
     
    EdTittel, Dec 11, 2017
    #25
  11. ANTJAC
    AntJac Win User
    Ah many thanks Ed. You learn something new every day!
     
    AntJac, Dec 11, 2017
    #26
  12. THRASIVOULOS
    Thrasivoulos Win User
    Doesn't work from Defender update either
     
    Thrasivoulos, Dec 11, 2017
    #27
  13. SCOTTYBOY99
    Scottyboy99 Win User

    Windows defender update fails.

    Give up for this evening, try again tomorrow. The silence from Microsoft is deafening. Pretty frustrated with them, they have messed up yet again and left many with outdated definitions because they can’t get their act together
     
    Scottyboy99, Dec 12, 2017
    #28
  14. ANTJAC
    AntJac Win User
    Did you say you saw something on the ms forums about it? I've tweeted them but no reply yet
     
    AntJac, Dec 12, 2017
    #29
  15. SCOTTYBOY99
    Scottyboy99 Win User
    I just found this on Microsoft forums posted by an ms chap

    ”Windows Defender team has identified a problematic signature that could cause this failure on some machines. We are deploying a fix this afternoon, and you should see the problem mitigated. If you are still seeing this exact problem (error code 0x80508007 on update) on 12/13/2017 or later, please reply to the thread with your signature version.”

    https://answers.microsoft.com/en-us/...9-d940cfc2c239
     
    Scottyboy99, Dec 12, 2017
    #30
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