1. Assure that your assigned MSL(Management Server List) contains the IP address of the server. If no, add the IP address with same priority in MSL. If you are using default MSL, you may need to create a new one and assign. Once all/majority of the client received new policy go to step 2
2. Change the hostname of SEPM and reboot it once.
3. Run management server configuration wizard. If you are receiving some error, use IP address instead of host name.
Note: It is advisable to take a backup once before performing this activity.