Hi,
Thanks for posting on our forum!
Firstly it's good for you to give us the error screenshot, however, apologize for not being able to read Turkish (?). I would appreciate it if you could translate the error message into English. When did this error message pop up on your Server Manager, what operation were you trying to do at that moment. I can only identify "...: Invalid namespace". Did the error message pop up when attempting to use WMI, as what @Anonymous suggested? We need more information to help you troubleshoot this issue.
Thanks for your support!
BR,
Joan
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