Be aware, some of my customers and others in the community have been reporting issues once KB3159706 is deployed to their WSUS servers.
This is a known issue, and you’ll need to do the manual steps at the end of the KB3159706 article to get your WSUS server operational again.
This patch replaces KB3148812 which kind of had some ‘issues’.
Here is an example of the kind of whining you’ll get if you connect to WSUS once this patch has been automatically deployed, and the manual steps not carried out:
Thanks Nick Mitchell for the heads up!