Sophos MCS Event 8001: The Sophos MCS cliens service has received an HTTP status 504/503 from the server.

Question

We started seeing the following events on some of our endpoints: I checked the MCS and all other logs and didn't notice anything that would correspond to those events. Does it mean that MCS couldn't communicate with Sophos Central due to timeout or Central not being available? 
 Thanks, 
 Iga

Yashraj S · Accepted Answer

Hi skyisbluescreen 
 This error is generic and should not result in failed communication attempts of the endpoint to Sophos Central servers. Can you please confirm if the endpoint status is being updated on Sophos Central? If so, can you please confirm if any Sophos services are stopped and if the firewall is causing any issues?

Yashraj S · Answer

Hi skyisbluescreen 
 Here's the KBA talking about Event ID 8001: https://community.sophos.com/kb/en-us/121349 . For the other issue, I'd request you to open a new thread.