With Symantec Data Center Security (DCS) installed in evaluation mode the UMC login Page no longer loads.
The SQL Browser Service is disabled
The SQL Server Browser Service must be running since the evaluation install references the database by instance name.
If there is a reason keeping the SQL Server Browser running is not possible you can set the SQL Instance to use a static port.
Then you must adjust the DCS configuratoin so that the DCS Manager connects to the port instead of the Instance Name.
For informatoin on setting a static port please reference MS SQL documentation.
To change the DCS server.xml please read the KB article http://www.symantec.com/docs/tech236049 for the proper format.