Backup Failed with status 13 for windows 2000 client

Hi Folks,

I am using netbackup 6.5.6 environment.

Backup failed with status 13 for windows 2000 client, both full/incremental failed with multistreaming and without multistreaming.

Backup slection is all local drives and the drives are C, D E all streams are failing with status 13.

Please suggest me the possible ways to reolve the problem

thanks in advance.