Do you see any other error messages in daemon.log?

well, this is th error in the dameon.log file, today the same thing happened. almost 3/4 of my backup is succeeded, but still it is failing and i can't do a cloning.

error:
GSS Legato authentication from backup-server.sidf.gov.sa failed...
03/22/07 09:29:31 nsrd: RPC error: Authentication error
03/22/07 09:29:31 nsrexecd: GSS Legato authentication from backup-server.sidf.gov.sa failed...
03/22/07 09:29:31 nsrexecd: RPC error: Could not authenticate daemon session: 0:6adc because an entry for the session number was not found

then i try to log to the networker console on the backup-server and its not connecting. i tried to restart the services, same result. so, iam restarting the backup-server inroder to connect to the console.
nsrexecd: RPC error: Could not authenticate daemon session: 0:6adc because an entry for the session number was not found
03/25/07 04:03:04 nsrd: GSS Legato authentication from backup-server.sidf.gov.sa failed...
03/25/07 04:03:04 nsrd: RPC error: Authentication error


then it gives this message:
nsrexecd: GSS Legato authentication user session entry (warning): "User authentication session timed out and is now invalid.". Session number = 0:6adc, domain = NT AUTHORITY, user name = SYSTEM, NetWorker Instance Name = backup-server.sidf.gov.sa

hi,

i tried to run this command: nsrexecd -D9
first, i stopped the Remote Exec Service, then i ran this command and tried to restart the above service again. the following error was shown form windows:

Microsoft Management Console
Could not start the Networker Remote Exec Service on Local Computer
The Service did not return an error. This could be an internal Windows error or an internal service error. If the problem persists, contact your system administrator.

I hope you are using 7.3.2 Jumbo 11 & above or atleast 7.3 Jumbo 8. If you are not using these, then first upgrade to 7.3.2 Jumbo 11.

I have seen this credentials error in 7.3.x versions only since Legato implemented some additional authentication system. In one of the threads earlier, someone gave in a method to disable the new auth method and therefore continue with old method with error free backups. The steps suggested were -

# nsradmin -p nsrexec
NetWorker administration program.
Use the "help" command for help, "visual" for full-screen mode.
nsradmin> . type: NSRLA (note: there is a blank space between . and type)
Current query set
nsradmin> show auth methods
nsradmin> print
auth methods: "0.0.0.0/0,nsrauth/oldauth";
nsradmin> update auth methods: "0.0.0.0/0,oldauth"
auth methods: "0.0.0.0/0,oldauth";
Update? yes
updated resource id 3.0.156.101.198.4.188.67.137.69.101.64(137)
nsradmin> print
auth methods: "0.0.0.0/0,oldauth";
nsradmin> quit

Restart daemons when done.

You can try this to get rid of the GSS authentication error.

All you need to do is to restart NetWorker without any debugs and the rest (of course, nsrauth should be off for server and storage nodes). That will probably resolve your issue.