Agent Unavailable - Although Protected server DPMRA service starts. RRS feed

  • Question

  • I've protected a server for a long time. Last night I ran Windows Updates and updated the NIC drivers. This morning the Agent is Unavailable. 

    When I refresh the agent on DPM, the DPMRA service starts on the protected server but DPM Management console displays the following errors:

    Protection agent version:	4.2.1205.0
    Error:	Data Protection Manager Error ID: 308
    	The protection agent operation failed because DPM could not communicate with the Protection Agent service on
    Detailed error code:	The RPC server is unavailable (0x800706BA)
    Recommended action:	If you recently installed a protection agent on, the computer may be restarting. Wait a few minutes after restarting the computer for the protection agent to become available. If the problem persists, do the following:
    1) Verify that is remotely accessible from the DPM server.
    2) If a firewall is enabled on, verify that it is not blocking requests from the DPM server. 
    3) If is a workgroup server the password for the DPM user accounts may have changed or expired. To resolve this error, run SetDpmServer with the -UpdatePassword flag on the protected computer and Update-NonDomainServerInfo.ps1 on the DPM server.
    4) Restart the DPM Protection Agent service on If the service fails to start, uninstall the protection agent by using Add or Remove Programs in Control Panel on Then in the Management task area, on the Agents tab, in the Actions pane, click Install to reinstall the protection agent on

    I have checked all of the above and reinstalled the agent... still no luck!

    Thursday, March 17, 2016 11:07 AM

All replies

  • BUMP.
    Thursday, March 17, 2016 3:33 PM
  • Hi,

    1. If protected server not domain member - check if password is expired

    2. Manually reinstall agent:

    - on protected server uninstall agent, and install using files from DPM server agents dir

    - and run: SetDPMServer.exe -DPMServerName dpm.mydomain.internal

    if protected server not domain server run: 

    SetDPMServer.exe -DPMServerName dpm.mydomain.internal -IsNonDomainServer -UserName "backup_user"

    and then on DPM server: 

    Update-NonDomainServerInfo.ps1 -dpmservername dpm.mydomain.internal -psname protected_server backup_user_password


    Tuesday, March 22, 2016 6:11 AM
  • This happens due to wrong update as well so check if updates installed are correct... Also check if communication is happening between both machines...

    Try to uninstall updates & then check if still same issue occurs?


    Mayank Dhama

    Tuesday, March 22, 2016 6:45 AM