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Probing windows updates on a standalone server from a domain server

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We have the check for windows updates running on all of our windows servers. We have a few of them standing as standalone servers in the DMZ, ie. they are not in our AD. If I try and check their Windows update status I get a very long error: Connecting to remote server xxxxxxxx failed with the following error message : WinRM cannot process the request. The following error with errorcode 0x80090311 occurred while using Kerberos authentication: There are currently no logon servers available to service the logon request. Possible causes are: -The user name or password specified are invalid. -Kerberos is used when no authentication method and no user name are specified. -Kerberos accepts domain user names, but not local user names. -The Service Principal Name (SPN) for the remote computer name and port does not exist. -The client and remote computers are in different domains and there is no trust between the two domains. After checking for the above issues, try the following: -Check the Event Viewer for events related to authentication. -Change the authentication method; add the destination computer to the WinRM TrustedHosts configuration setting or use HTTPS transport. Note that computers in the TrustedHosts list might not be authenticated. -For more information about WinRM configuration, run the following command: winrm help config. For more information, see the about_Remote_Troubleshooting Help topic.

I've set up seperate authentication in the host object in PRTG, and I've created a local admin with correspondig username / password in the stand-alone server?

dmz updates windows

Created on Aug 28, 2018 9:53:02 AM by  fribse (50) 1 1



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Hi Fribse,

I'm afraid it's not possible to use the Windows Update Sensor outside of domains as Kerberos only accepts domain user names, but not local user names.

The only workaround I see is installing a Remote Probe directly on these servers, so the execution of the sensor is running in the local security context.

For more information about setting up Remote Probes, please have a look here: https://www.paessler.com/manuals/prtg/remote_probe_quick_install

I hope this helps :)


Andreas Günther
Tech Support, Paessler AG

Created on Aug 30, 2018 9:14:58 AM by  Andreas Günther [Paessler Support]



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