Server 2012R@

Exchange 2013 SP1

I get routine updates to  the exchange anti-spam filters delivered from WSUS. They are all failing with error 80070643. I went to the exchange forum and got a manual update script which works. Why does the WSUS update fail?

Hi John,

>>Why does the WSUS update fail?

Error 80070643 means that fatal error during installation. We may try to find something related in the windowsupdate.log.

If windowsupdate.log didn't tell the detail, we may need to check the CBS log.

WSUS is a role that manages the updates and delivers the updates to the clients. This error occurs during the installation. From my point of view, WSUS is not the one should be blamed.

Best Re