When you are looking to register with the do the job or school account to as well as your check in is blocked, it likely signifies your Microsoft 365 administrator build a protection coverage that's avoiding you from signing in to that locale. Microsoft 365 or Office will not install: https://downloadmicrosoftoffice43196.blogsuperapp.com/27164332/a-simple-key-for-microsoft-office-2021-premium-license-for-3-devices-unveiled