Additional features, settings, or issues not covered by specific Microsoft Teams categories
Hello Patrik S_,
Good day to you and hope you are doing well.
Regarding your issue, suggest you to kindly verify your system is supported for Teams PowerShell module via follow Teams PowerShell Module - Supported Versions. If your system is under supported version list and still facing issue, check with uninstall Teams PowerShell module re-install it via follow Install Microsoft Teams PowerShell. After re-install Teams PowerShell module, try to run the cmdlet and check.
If still same error occurs, suggest you to run this PowerShell command from different system. Also if other users in your organization have admin permission, ask that user to run this command with his/her account with own system and on your system and check. With this we can identify where the issue is. At this point, your kind co-operation will be highly appreciated.
Thank you so much for your precious time. Stay safe, happy and healthy forever.
Regards, Ankita Vaidya