Has anyone found a solution for this issue?
I am experiencing the excact same thing on a newly installed server 2012R2 server.
Then, like above, I would say that the WSUS Server has not been properly configured as a *SSL CLIENT*.
Did you install the SSL certificate (and root certs) in the proper cert store of the WSUS server?
Lawrence Garvin, M.S., MCSA, MCITP:EA, MCDBA
SolarWinds Head Geek
Microsoft MVP - Software Packaging, Deployment & Servicing (2005-2014)
My MVP Profile: http://mvp.microsoft.com/en-us/mvp/Lawrence%20R%20Garvin-32101
http://www.solarwinds.com/gotmicrosoft
The views expressed on this post are mine and do not necessarily reflect the views of SolarWinds.