Will changing the computer name of the TEM Server be a problem?
Changing the hostname of the TEM server can cause client communication problems and is not advised.
Resolving the problem
When you first setup your deployment you configure the name of the TEM Server as a name or IP. This information is build into the client and is used for communication. This is your deployment Masthead. If your masthead file was created using the computer name of the TEM Server and that changes then client network traffic will be unable to reach the Server. If you are unfamiliar with your configuration you may use the TEM Administration Tool in the Masthead Management to Export Masthead. Review this export file for the URL value like X-Fixlet-Site-Gather-URL.