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WMI Windows Updates Status Error after Server Update



Hello, we've got an error on some our servers after the last comulative Windows Updates.

The Error message:

"Der WinRM-Client hat einen Status in Bezug auf eine ungültige HTTP-Anforderung (400) empfangen, aber der Remotedienst hat keine anderen Informationen zur Fehlerursache bereitgestellt."

It's a little confusing for me since on Servers the WMI service works fine and on some we got this error message and we didn't change anything.

Thanks in advance.

prtg windows-server wmi

Created on Nov 16, 2021 2:18:49 PM

3 Replies




Is the probe running the sensor and the target device in the same domain? What permissions does the user has that is entered in the "Credentials for Windows" in the device setting? What do you use as the address of the device (IP, DNS, or FQDN)?

Kind regards,
Sasa Ignjatovic, Tech Support Team

Created on Nov 19, 2021 11:36:36 AM by  Sasa Ignjatovic [Paessler Support]



No, the're not in the same Domain, but it doesn't matter, since some of the other server w/o that error message are in the same domain like the server who got that error. The User has the full permissions. Mostly IP but some w/ DNS or FQDN.

However we solved this error by our self: go to regedit on the server(-s) and add those 2 lines in the following path:

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\HTTP\Parameters] "MaxFieldLength"=dword:0000ffff "MaxRequestBytes"=dword:0000ffff

Created on Nov 19, 2021 12:25:13 PM



Hello AlexF.

Happy to hear that you solved the issue. And thank you for sharing your solution.

Kind regards,
Sasa Ignjatovic, Tech Support Team

Created on Nov 22, 2021 7:35:26 AM by  Sasa Ignjatovic [Paessler Support]

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.