Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
I like to share my sollution:
i tried all the already mentionned thinks like
- deleting helpfolder
- deleting keys in registry
- etc. etc.
till i found somewere one little remark about that setup uses the tasksheduler ... so i checked but the service was inactive and i could not start it.... The service was dependent on two other services and they also were inactive... activating both services and then the task sheduler service did the trick...
office installed in 2 minutes :)
You can check in the taskmanager very simple if your task-sheduler-service is activated... if its inactive i think setup will fail most certainly... at least, mine did.
hope i helped someone out