I have configured db mirroring successfully without witness.
later when im adding witness server i have constantly failed with the following error
"Alter Database command couldn't sent to remote server instance 'TCP://FKBSUB:5022'.
The database mirroring configuration is not changed.Verify Server is connected and try again (Microsoft SQL Server,Error:1456)"
my principal in on sp2
mirror on sp1
witness on sp1
all enterprise edition