My env. is ConfigMgr 2007 installed on windows server 2008R2, and now, we built two windows server 2012 and 2012R2 servers.
I installed the ConfigMgr client on the windows server 2012, and the status is normal as I check.
Now when I download the security updates, it shows the errors: The server returned an invalid or unrecognized response
I checked the PatchDownloader.log and it shows the errors as below: