Windows 10 Installation Failure: Windows failed to install the following update with error 0x80070643: Security Intelligence Update for Windows Defender Antiviru

[Anuwar]

Hi,

I am having issue as the subject above.


I am using WSUS to get all my windows update.

the computer that is affected does not have any internet connection, only WSUS have internet connection to get the update from windows update server.


i don't have issue with other windows update only this KB that I'm having issue with.

the update will be successful if i connect the affected computer to the internet to get this update.


once successful getting the update from internet, i will switch back to using WSUS with out internet, the computer will be successful getting the update from WSUS for a few day then fail again after that.


i also try to install the definition manually for the first time then change back to get the update from WSUS, the computer will be successful getting the update from WSUS for a few day then fail again after that.


I'm not sure what is the problem.

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