Hi
Please do the following & check the link below for more details
http://www.symantec.com/docs/TECH67768
If the new Central Administration Server was moved from a system that has a different name, then some registry keys on the Managed Media Server will have to be changed in order for the Managed Media Server to communicate with the new Central Administration Server.
The keys that need to be changed are as follows...
Warning: Incorrect use of the Windows registry editor may prevent the operating system from functioning properly. Great care should be taken when making changes to a Windows registry. Registry modifications should only be carried-out by persons experienced in the use of the registry editor application. It is recommended that a complete backup of the registry and workstation be made prior to making any registry changes.
HKLM\Software\Symantec\Backup Exec for Windows\ADAMM\
Change the Database Server Name key to the new server name
If the instance name has changed as well, then the Database Instance Name key will also have to be changed to the new instance name. If the source system used a named SQL instance but the target now uses a default instance, then the instance name should be removed from the instance name key.
Note: If the Managed Media Server is not sharing the database on the Central Administration Server than changing this ADAMM key should not be necessary. It should point to the local server, which is the Managed Media Server.
HKLM\Software\Symantec\Backup Exec for Windows\Backup Exec\Server\
Change the DjmPrimaryServer key to reflect the name of the new Central Administration Server. Changing this key ensures that communication through the Message Queue can now take place between the new CAS and the MMS.
