If you have a workgroup computer protected with DPM 2010, you will receive an “Agent not reachable” sometimes. This happens because the password, used for communication between DPM and protected host, expires. So, you must renew the password.
To do this, you first have to change the password at the protected host:
- Navigate to folder C:Program FilesMicrosoft Data Protection ManagerDPMbin
- Execute the command SetDpmServer.exe -dpmServerName <HostName> -isNonDomainServer -userName <UserName>
HostName is the name of the protected host (it colud be a Netbios or a FQDN name)
UserName is the user, the one who is used for communication between Host and DPM
After this, you must logon to the DPM server, start DPM Management Shell and write a command:
Update-NonDomainServerInfo –PSName <HostName> –dpmServerName <DPMServer>
(also here HostName is the name of the protected host and DPMServer is the name of the DPM server – FQDN or Netbios name).
Now you will be prompted for the password and you must specify the same password as in the protected host.
That”s all. Now the servers will communicate without any problems. To be sure, you can refresh the agent state in the DMP console (you will see, that the agent is reachable).
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