Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Hi Falk,
It must be tied to your account. To deactivate the current install, with the same Microsoft account, go to:
https://account.microsoft.com/services?refd=account.microsoft.com
You should be able to deactivate from there.
I hope this information helps. If you have any more questions, don't hesitate to reach out.
Otherwise, please take a moment to rate the answer. Wishing you good luck!