We've recently migrated from on-prem to Central. We're in the last stages of replacing the on-prem client with the Central client but on our 2008 R1 SP2 servers we're getting this error shown in the screenshot.
When we inspect our Firewall logs, it appears the remote end is rejecting it. Has anyone seen this before and how do we overcome it? The KB article referenced doesn't help as we don't have the Cloud Installer log files directory to see what's happening.
As they are 2008 R1 machines I would look into seeing if TLS 1.2 is enabled on the servers. My understanding is that this is not enabled by default on this OS. Communication to Sophos Central requires TLS 1.2.
You may also need to enable TLS 1.2 for WinHTTP on the server:https://support.sophos.com/support/s/article/KB-000038283?language=en_US
Thanks for the replies. Not had a chance to pick this up but will and report back.