Windows Update (KB3081704) - Error 0x80070643

I am not able to get any Windows Update installed (not even for the Windows Defender). I always get the 0x80070643 error message.
By the way: The Windows Firewall is enabled.

 

Remember the old reset of update.

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. Type Exit in the Command Prompt to close it.




Now you may try running the Windows Updates and check if the above steps resolve the issue.

Seems to be the first thing to try when you get error of install update.

 

Dieter, how are you, hope all is well. I have to go do some work but wanted to say hi.

 

Hello Odie, thanks, I am fine, but my Win10 Update Service doesn't work.

 

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Meanwhile I was able to solve my problem to get the Defender Virus Definitions updated.
Solution: I ran the update from within the Windows Defender app.