Symantec Endpoint Protection Manager Unexpected Server Error -

: Ensure the drive where SEPM is installed has at least 5-10 GB of free space. A full disk often causes database corruption or prevents log writing.

: Another application might be using port 8443, 8081, or 9090.

: This is the most frequent culprit. If the SEPM cannot communicate with its embedded database or SQL Server, the console will fail to load.

: Review scm-server-0.log and catalina.out for specific stack traces. Look for "Login failed for user" or "Connection refused" errors.