I may be a bit off in context but hopefully I've caught everything here
To change your email address in Azure, you'll need to follow these steps:
- Log in to the Azure portal.
- Navigate to the Azure Active Directory service.
- Select Users and then choose the user whose email you want to change.
- In the user's profile, find the Profile section and click on Edit.
- Update the email address fields with the new email address.
- Save the changes.
After updating the email address, it's important to update any related services or applications that use this email address for authentication or communication purposes.
Then to be thoroughly, double check your email address in the Office 365 admin center as well. This can be done by:
- Logging into the Office 365 admin center.
- Navigating to Users > Active users.
- Selecting the user and editing their contact information to update the email address.
Remember to check any group-based licensing features to ensure that the new email address is associated with the correct licenses and permissions. Shouldn't be an issue but happens occasionally.
Lastly UPN mismatch might bite you, where the original email and UPN are the same and changing email won't change UPN. Let me know if you need instructions to change UPN