Definition Update for Windows Defender - KB2267602 (Definition 1.213.6196.0) - Error 0x80070643

Hi Bobby,

Thank you for posting your query in Microsoft Community.

Sorry for the inconvenience caused.

Please follow the methods below and see if it helps:

Method 1:

I suggest you to run Windows Update Troubleshooter

Follow the below steps:

1.     Type troubleshooting in the search bar. 

2.     Select Troubleshooting.

3.     Select View all on the top left corner.

4.     Click on windows update.

5.     Follow the on-screen instructions to run the troubleshooter

Method 2:

If the issue still persists, try the below method and check if it helps or not:

I would recommend you to reset the windows update component manually. Resetting Windows Update Components will fix corrupt Windows Update Components and help you to install the Updates quickly. Follow the below steps:

1. Press Windows Key + X on the keyboard and then select “Command Prompt (Admin)” from the menu.
2. Stop the BITS, Cryptographic, MSI Installer and the Windows Update Services. To do this, type the following commands at a command prompt. Press the “ENTER” key after you type each command.

                           net stop wuauserv

net stop cryptSvc

net stop bits

net stop msiserver

3. Now rename the SoftwareDistribution and Catroot2 folder. You can do this by typing the following commands in the Command Prompt. Press the “ENTER” key after you type each command.

                          ren <C:\Windows\SoftwareDistribution SoftwareDistribution.old>

ren <C:\Windows\System32\catroot2 Catroot2.old>

4. Now, let’s restart the BITS, Cryptographic, MSI Installer and the Windows Update Services. Type the following commands in the Command Prompt for this. Press the ENTER key after you type each command.

                        net start wuauserv

net start cryptSvc

net start bits

net start msiserver

5. TypeExit in the Command Prompt to close it and then restart the computer.

Also refer the link below for more information

https://support.microsoft.com/en-us/kb/3105210

Hope this information helps. Please post us if you need any further assistance with Windows.

Thank you.

@BobbyBoyer -

The error you are seeing is generic error failed (not helpful on either end). 

Try executing the following command : "%programfiles%\windows defender\mpcmdrun.exe" -signatureupdate -http

I'm digging into this a bit more to try and understand why this is happening

Thx,

CJ.Eichholz (MSFT) - Microsoft Antimalware

CyberDust: +msft_cjeichholz

Twitter : @msft_cjeichholz

This post is provided as-is with no warranty or support.

@Shootfire -

This is the generic error_install_failed message.  If you can post the last failed entry of the following file (\windows\temp\mpsigstub.log) I can follow up with the engineering team. 

Windows Defender receives it update by default through Windows Update Service.  I would first check to see if the Windows Update service is working correctly. 

If that is working and you feel that you need to manually download latest signatures try executing the following command : "%programfiles%\windows defender\mpcmdrun.exe" -signatureupdate -http

Thx,

CJ.Eichholz (MSFT) - Microsoft Antimalware

CyberDust: +msft_cjeichholz

Twitter : @msft_cjeichholz

This post is provided as-is with no warranty or support.

Here's that log. The other thing of note here is, Windows Defender is switched OFF and the Windows Defender service is set to manual and not running. I use Norton Security. So not sure why it's attempting to download updates to begin with...

Command:    MpSigStub.exe /program "C:\Windows\SoftwareDistribution\Download\Install\AM_Delta.exe" WD /q

Start time: 2/16/2016 7:39 PM (version 11.1.5276.0)

=================================== ProductSearch ==================================

                 Windows Defender:

         Status: Active           

        Product: 4.9.10586.0      

         Engine: 1.1.12400.0      

     Signatures: 1.213.6150.0     

     NIS Engine: 2.1.11804.0      

 NIS Signatures: 115.35.0.0       

================================ PackageDiscovery ================================

Package files discovered:

C:\Windows\Temp\F07F6A8C0793C1A42BD3B274BBD222C5-Sigs\MPASDLTA.VDM (1.213.6352.0)

C:\Windows\Temp\F07F6A8C0793C1A42BD3B274BBD222C5-Sigs\MPAVDLTA.VDM (1.213.6352.0)

               AM Delta:   

       Engine: Not included

  AS base VDM: Not included

  AV base VDM: Not included

 AS delta VDM: 1.213.6352.0

 AV delta VDM: 1.213.6352.0

================================= MpUpdateEngine =================================

Hi,

I'm still having this issue weeks later. (Posted log above)

Here is what else I've done to try and troubleshoot:

• I thought maybe if I started Windows Defender and updated through the app itself, it might fix it. So I attempted to start the Windows Update service (WinDefend) through services.msc. Upon pressing start, I got "Error 577: Windows cannot verify the digital signature for this file..."  
• I was also unable to manually switch on Windows Defender in the Windows 10 Settings -> Update & security menu.  

So the issue seems to lie with Windows Defender, not necessarily Windows Update.

I would also like to know if this error on Windows Update is preventing me from getting additional updates, because I haven't seen any other updates available since this error showed up.

Thanks.