Issue with scanning in thin clients please can you help resolve Connection to RPC server in the workstation failed

Issue with scanning in thin clients please can you help resolve Connection to RPC server in the workstation failed

Issue scanning in thin client using windows xp service pack 3 no firewall is enabled have checked dcom and wmi get the following error message.  Connection to RPC server in the workstation failed.
 
Please can you resolve asap

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