It seems that your colleague is encountering issues because she is trying to sign up for a Microsoft 365 Family Subscription using a work or school email address. Microsoft does not allow the creation of personal Microsoft accounts using work or school email addresses. Instead, she needs to use a personal email address to create a Microsoft account or to accept the invitation.
Here are the steps she can take:
- Use a Personal Email: If she has a personal email address, she should use that to create a Microsoft account and then accept the invitation.
- Rename Existing Account: If her work or school email is linked to a personal Microsoft account, she may need to rename her personal account to free up the email address for use with her work account. This can be done by following the steps outlined in the Microsoft support documentation.
- Contact Admin: If she is unable to resolve the issue, it may be helpful to contact her IT department or Microsoft support for further assistance.
Following these steps should help her access the Microsoft 365 Family Subscription successfully.