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DPM Agent installation error 32684

Anonymous
2024-04-26T10:39:40+00:00

When adding a non-domain Windows 11 machine to DPM 1801 getting error message: 32684: Unable to contact the protection agent on server...

DNS Suffix added to workstation.

.NET Framework is installed.

The agent was installed successfully from DPM Server Agent installation folder.

All firewall rules were added per documentation. (After many attempts firewall was temporarily disabled to troubleshoot).

The username and password are correct.

SetDpmServer.exe -dpmServerName ... -isnondomainserver ... runs successfully.

With -ProductionServerDnsSuffix and without it returns the same error.

None of the options work and it is always the same error. What is wrong here?

Windows for business | Windows Server | User experience | Remote desktop services and terminal services

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  1. Anonymous
    2024-04-28T19:48:38+00:00

    Hello，

    The error you're encountering suggests that the Data Protection Manager server is unable to communicate with the protection agent installed on the non-domain Windows 11 machine. Here are some troubleshooting steps you can try:

    1. Verify that the DPM agent version is compatible with DPM 1801.
    2. Ensure that the two machines can communicate over the network. You can test this by pinging the DPM server from the Windows 11 machine and vice versa.
    3. Ensure that the time and date are synchronized between the DPM server and the Windows 11 machine.
    4. Check the event logs on both the DPM server and the non-domain Windows 11 machine for any related errors or warnings that might shed light on the issue.

    I hope this helps.

    Best regards

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  2. Anonymous
    2024-05-08T09:12:38+00:00

    Hello，

    The error you're encountering suggests that the Data Protection Manager server is unable to communicate with the protection agent installed on the non-domain Windows 11 machine. Here are some troubleshooting steps you can try:

    1. Verify that the DPM agent version is compatible with DPM 1801.
    2. Ensure that the two machines can communicate over the network. You can test this by pinging the DPM server from the Windows 11 machine and vice versa.
    3. Ensure that the time and date are synchronized between the DPM server and the Windows 11 machine.
    4. Check the event logs on both the DPM server and the non-domain Windows 11 machine for any related errors or warnings that might shed light on the issue.

    I hope this helps.

    Best regards

    Thanks for the feedback!

    More info:

    Small mistake, DPM version is 1807 (5.1.378.0)

    Agent version on Win 11 PC is 5.1.363.0

    1. It should be compatible, as it is was installed from DPM server.
    2. Ping is successful from both machines, as well as Test-NetConnection with port 135 returns True
    3. Time zones are equal and time is correctly synced.
    4. DPM server logs return the same error - Agent operation failed. (ID: 370) Unable to contact the protection agent on server ... (ID: 32684). Win 11 machine has no logs that could help.

    Issue is still present. :(

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  3. Anonymous
    2024-05-09T06:35:18+00:00

    I had exactly the same problem and I was tearing my hair out for almost a day. I could even ping and map drives to each other but the agent attach failed every time. It turned out that the they were sitting either side of a firewall and I hadn't opened up all the necessary ports. https://learn.microsoft.com/en-us/system-center/dpm/deploy-dpm-protection-agent?view=sc-dpm-2022#set-up-firewall-exceptions

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