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Why do I get an error message when trying to restart Windows Server 2019 after a PRTG update?

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I have Windows Server 2019 installed on the system running my PRTG core installation.

When I update PRTG and want to restart the system as the PRTG setup wizard asks me to do, the setup window closes without initiating a system restart. Instead, I get the error message

Setup was unable to restart the computer. Please do this manually.

What is the reason for this behavior? Is there a workaround?

prtg windows-server windows-server-2019

Created on Oct 15, 2019 6:17:44 AM by  Maike Guba [Paessler Support]

Last change on Oct 15, 2019 10:51:05 AM by  Maike Guba [Paessler Support]



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This article applies to PRTG Network Monitor 19 or later

Manual Restart of System Running on Windows Server 2019 after PRTG Update

After you update to a new version, PRTG usually requires you to restart the computer. Typically, PRTG restarts the computer automatically. On Windows Server 2019, however, the system restart is not automatically initiated. Instead, you get the error message

Setup was unable to restart the computer. Please do this manually.

This is because Windows Server 2019 does not forward some policies to members of a non-local user group, in this case, the PRTG Administrators group. This prevents an automatic system restart.

If you experience this issue, please restart your system manually. For a possible workaround, see this Microsoft Tech Community post.

Created on Oct 15, 2019 6:21:31 AM by  Maike Guba [Paessler Support]

Last change on Oct 16, 2019 9:47:43 AM by  Maike Guba [Paessler Support]



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Disclaimer: The information in the Paessler Knowledge Base comes without warranty of any kind. Use at your own risk. Before applying any instructions please exercise proper system administrator housekeeping. You must make sure that a proper backup of all your data is available.