On a Windows 2003 SP2 domain controller I have a backup script which runs as a scheduled task most nights when it runs immediately after the script initiates a DCOM error appears in the event log
"DCOM was unable to communicate with the computer %Computer Name% using any of the configured protocols"
The computer does not exist in the network though I did find an entry for the server FHC_2K3 in the scheduler registry entry under the Oldname entry which I changed. there was also an entry under ShellNoroam though I doubt this was causing the problem. I have checked all the DNS entries and nothing appears for FHC_2K3.
I have also flushed the DNS cache in DNS and using ipconfig.
About 30 mins later another event log shows the RSM service has stopped and thus the backup fails.
If however, I connect from home and set the scheduled backup task to run say in five minutes time it works perfectly with no DCOM error.
This is a complete pain as I have to dial in every night and manually start the backup so any help greatly appreciated.
Non of the suggested fixes so far have worked.