Windows 10: windows defender update fails after 16299.309 update Solved

  1.    17 Mar 2018 #1

    windows defender update fails after 16299.309 update

    my system has updated to 16299.309 ok but i keep getting a failed Windows Defender update error
    it's says it's downloading, then installing, gets to 100% and then throws error message below:

    Definition Update for Windows Defender Antivirus - KB2267602 (Definition 1.263.659.0) - Error 0x80070643"

    i tried many fixes including the Trouble Shooter, SFC, resetting download history (batch file from Brink) & ended up reinstalling windows 10 (keeping programs, files & settings) but no fix.
    if i try to update directly from defender i get "error code - 2147023293 ...Fatal error during installation"

    Disk Cleanup of system files is also problematic & doesn't complete on its own.. has to be stopped & restarted numerous times but ultimately seems to delete the required files..

    since i reinstalled windows 10.. do you think it's a setting that was retained from previous install that is stopping it from working? i've wasted hours on this and i've hit the wall.
      My ComputerSystem Spec

  2.    17 Mar 2018 #2

    reinstalling windows 10 (keeping programs, files & settings)

    - presumably you mean you did an in-place upgrade repair install? (Normal boot, run setup.exe from a mounted Win 10 iso or Win 10 bootable medium).

    1. First check your disk:
    Download and run Hard Disk Sentinel (trial) and make sure all disks are reported as good.
    If not, do not continue, and post a screenshot of its GUI.

    2. Now check your file system:

    From an admin command or powershell prompt
    [Windows key + X, click command prompt (admin)]
    chkdsk C: /F
    Your PC will need to restart.
    Post back the result, which you can get after a restart as follows:
    Read Chkdsk Log in Event Viewer in Windows 10 Windows 10 Tutorials
    How to read Event Viewer log for Chkdsk in Windows 10 [Tip] | dotTech
    How do I see the results of a CHKDSK that ran on boot? - Ask Leo!

    If that's all ok, then see this solely on Defender updates:
    FIX: Definition Update for Windows Defender Fails with Error 0x80070643 -
    On Windows Defender Definition Update error 0x80070643 - Microsoft Community
      My ComputerSystem Spec

  3.    22 Mar 2018 #3

    well the problem has fixed itself..
    tried manual updates again today and all went fine.. no errors..
    hope it stays that way..
      My ComputerSystem Spec

  4.    25 Mar 2018 #4

    ...and it's back
      My ComputerSystem Spec


Related Threads
Windows defender update fails. in Windows Updates and Activation
I got error like this. There were problems installing some updates, but we'll try again later. If you keep seeing this and want to search the web or contact support for information, this may help: . Definition Update for Windows Defender...
It's dejá vu all over again. :doh: The correct behaviour of windows update over a metered connection is to offer the choice to download, or wait until on a non-metered connection. 128460 The initial build of the Anniversary Update broke...
Solved Update Fails Windows and Defender in AntiVirus, Firewalls and System Security
Since yesterday i keep getting this error. Any ideas how to fix this? 30258
Definition Update for Windows Defender fails in Windows Updates and Activation
When I run Windows update I am always getting the message below. the Definition number changes as a new definition is released. ...
I checked my Update history and noticed that the Definition Update for Windows Defender - KB2267602 failed to install. I do not use Windows Defender as I use Norton Security. Windows Defender is grayed out. However, I think that the definitions...
Our Sites
Site Links
About Us
Windows 10 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 10" and related materials are trademarks of Microsoft Corp.

© Designer Media Ltd
All times are GMT -5. The time now is 05:32.
Find Us