CMK version: 2.3.0p23
Hello ,
I have an strange Problem on one W2016 Server with my baked Agent which should check the Windows License Status .
On all other 150 Servers the Check was integrated in the Services and works well .
But on this Server , on an fresh Installation in Monitoring , the Services “Windows License” shows up correct and works well . But after some Time , maybe an Update of the Agent , The Host brings me an Vanished Service Warning and the Windows License Check shows
“Item not found in monitoring data” .
Here you see the difference from this special Server to the others .
I reinstall the Agent on this Server , i baked an new Agent , try checkMK Agent updater -vv
The Problem still persist .
Under Agent Update status Page there is no difference from this Servers Agent to the other Servers
What can be the reason for this behaviour ?
Thanks
Michael
First step is to check if the license plugin script is existing on this machine.
If it is there, i would check if it shows the correct data if executed.
Also you should take a look at the agent output and inspect it for the license check section.
Good Morning Andreas .
Here the Screenshots :
Agent-Output.txt (22.2 KB)
Thanks
Michael
Good Morning Andreas ,
Can u find out whats going wrong with my Agent especially on this Server ?
Thanks
Michael
Think i found the Problem . I see that the UAC on this both Servers shows a Warning Sign that means to press ok and the restart the Server to activate the settings of UAC .
After the Restart of the Servers the Warning Sign in UAC goes away .
Is it possible that a wrong configured or working UAC make Problems that the Agent Plugin dont work correct ?
Michael
Sorry , unfortunately the UAC behaviour dont solve the Problem .
It was very strange , when i restart the Server then the “Windows License” Check was succesfully , but on the next check the Agent shows “Item not found in Monitoring Data” .
Michael
I found this in the CheckMK Agent Log :
2025-06-11 11:16:49.638 [srv 4212] perf: In [63] milliseconds process ‘“C:\ProgramData\checkmk\agent\plugins\win_license.bat”’ pid:[1904] SUCCEDED - generated [0] bytes of data in [0] blocks
2025-06-11 11:16:49.639 [srv 4212] [Trace] Key value cannot be processed ‘LS:SIP - Load Management’
2025-06-11 11:16:49.639 [srv 4212] [Warn ] Process ‘C:\ProgramData\checkmk\agent\plugins\win_license.bat’ has no data
Any News for the Problem ?
Thanks
The error message sounds more like a broken Windows server.
Or broken licencing on this machine.
With the following three lines of Powershell code you should get a similar output as with the VBS script.
write-host("<<<win_license_ps>>>")
$basicQuery = 'SELECT Name,Description,PartialProductKey,LicenseStatus FROM SoftwareLicensingProduct WHERE LicenseStatus <> 0 AND Name LIKE "Windows%"'
Get-CimInstance -query $basicQuery | select-object Name,Description,PartialProductKey,LicenseStatus | fl
I gave it a different header name to not confuse CMK. But you can test this script beside the original one and should see inside the agent output if this is producing any output.
For booth scripts i would recommend a cache time setting with a minimum of some hours. It makes no sense to run this every check interval.
Hello Andreas ,
Thanks for the answer .
How can i insert the ps Script instead of the win_license.bat File in the Plugins for this Server in the CheckMK Agent ?
Under which Option i can configure the cache Time Setting for this License Check ?
Thanks
Michael
Not instead only as addition to test if your get some output.
Place it in the Plugins folder of the agent.
→ 8.2 Monitoring Windows - The new agent for Windows in detail
Then later you can download the agent output from the CheckMK gui. There you should look for the header line “win_license_ps”. But remember to configure a cache time for the plugin.
