Windows 10: Windows Defender update failed, sort of?

Discus and support Windows Defender update failed, sort of? in AntiVirus, Firewalls and System Security to solve the problem; Copied from my Reddit post. My internet has been slow today, and my Defender definitions update took longer than usual like 5-10 minutes. When it... Discussion in 'AntiVirus, Firewalls and System Security' started by SleeplessPoster, Mar 23, 2020.

  1. Windows Defender update failed, sort of?


    Copied from my Reddit post.


    My internet has been slow today, and my Defender definitions update took longer than usual like 5-10 minutes. When it finished downloading in the update center, it said the update failed and I could restart my PC to try again.



    I did, and my check then refused to show me the update again. This also happened when I clicked "retry" before restarting. I checked update history to see if it was installed, but it wasn't listed.



    Then I checked Defender itself, and THAT said it was up to date and updated today. Did I get the update or not?! How do I make sure I didn't just get some faulty broken update? Should I run a repair tool?

    :)
     
    SleeplessPoster, Mar 23, 2020
    #1
  2. jds21 Win User

    Windows Updates failed to instal

    I just did step one and they have just all installed.... thank you so much.... it was quite frustrating having that update window pop up every 5 minutes and failing to instal every time

    Thanks mate
     
    jds21, Mar 23, 2020
    #2
  3. AsRock Win User
    Windows Updates failed to instal

    I'm not sure how differant XP media center Edition is but you could clear the history \ cache if these folders are there.

    Step 1 Register DLL files.

    =================

    By trying this step, we can check if the update engines are working properly.



    1. Close all instances of Internet Explorer.

    2. Click Start and Run, type "Regsvr32 atl.dll" (without quotes) in the Open box and click OK.



    Note: There is a space between regsvr32 and atl.dll



    3. Similarly, one by one, register the files listed below:



    Regsvr32 msxml3.dll

    Regsvr32 wuapi.dll

    Regsvr32 wuaueng.dll

    Regsvr32 wuaueng1.dll

    Regsvr32 wups2.dll

    Regsvr32 wucltui.dll

    Regsvr32 wups.dll

    Regsvr32 wuweb.dll

    Regsvr32 qmgr.dll

    Regsvr32 qmgrprxy.dll

    Regsvr32 jscript.dll



    Note: If you encounter errors while registering any of these files then skip that file and continue with the next one.



    If the issue persists, let's move on to the steps below to verify Windows Update services and temporary folders.



    Step 2 Verify the relevant Windows Update services.

    =========================================

    1. Click Start->Run, type "services.msc" (without quotation marks) in the open box and click OK.

    2. Double click the service "Automatic Updates".

    3. Click on the Log On tab, please ensure the option "Local System account" is selected and the option "Allow service to interact with desktop" is unchecked.

    4. Check if this service has been enabled on the listed Hardware Profile. If not, please click the Enable button to enable it.

    5. Click on the tab "General "; make sure the "Startup Type" is "Automatic" or "Manual". Then please click the button "Stop" under "Service Status" to stop the service.

    6. Then please click the button "Start" under "Service Status" to start the service.

    7. Please repeat the above steps with the other services:



    Background Intelligent Transfer Service

    Event Log

    Remote Procedure Call (RPC)



    Note: Event log service is enabled on all of the hardware profiles; this service does not have an option to enable or disable on certain hardware profile.



    If it still does not help, let's proceed to step 3.



    Step 3 Reload the Update temporary folders.

    ===================================

    One possible cause is that the temporary folder for Windows Update is containing corrupted files. Let's erase all the files there to get the system clean.



    1. Click Start, Run, type: cmd and press Enter. Please run the following command in the opened window.



    Net stop WuAuServ



    2. Click Start, Run, type: %windir% and press Enter.

    3. In the opened folder, rename the folder SoftwareDistribution to Sdold.

    4. Click Start, Run, type: cmd and press Enter. Please run the following command in the opened window.



    Net start WuAuServ



    Please test the Windows Update website and let me know the result. If the issue persists, to clarify the issue and provide more accurate troubleshooting steps, please assist me in collecting the following information.
     
    AsRock, Mar 23, 2020
    #3
  4. Windows Defender update failed, sort of?

    Windows 10 fails to update


    When you finish testing the Avast suggestion, make sure that you restart your machine.

    Then if the issue persists, please return to the trouble shooting list in post# 89

    I think there are three steps that remain; the WU troubleshooter, reset WU components, and manual WU reset.
     
    Slartybart, Mar 23, 2020
    #4
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Windows Defender update failed, sort of?

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