Hi @Nicolec2175,
the error message is showing (saying) that your user does not have a mailbox and a licence assigned.
Check if your user has a Microsoft licence and a mailbox in Microsoft 365 admin center:
https://admin.microsoft.com/
If it does, try to remove the licence and add it againg.
Please click Mark as Best Response & Like if my post helped you to solve your issue.
This will help others to find the correct solution easily. It also closes the item.
If the post was useful in other ways, please consider giving it Like.
Kindest regards,
Leon Pavesic
(LinkedIn)
(Twitter)
