Specific RPC error message: Error 0x6d9

Hello
I am facing a bit of a problem with Exchange 2010 test environment.
Currently I have a DB and it has a replica Status of "ServiceDown".
When I tried to mount the database I got this following error:
Microsoft Exchange Error
Failed to mount database 'DB01'.
DB01
Failed
Error:
The RPC query to retrieve the copy status for Database DB01 failed. The service might not be running. Error message: A server-side administrative operation has failed. The Microsoft Exchange Replication service may not be running on server exchange.company.local. Specific RPC error message: Error 0x6d9 (There are no more endpoints available from the endpoint mapper) from cli_GetCopyStatusEx2
I am new to swap, but I make sure that the service specified with the latest Exchange services and they all are set up.
I have tried some reboots just for fine measure as well.
Please help me.
Thanks in advance.
