B2B collaboration user couldn't change password

Question

Hi guys,

help me to understand cause of the issue.

I have 2 users converted to external B2B collaboration(to let them use external email address as a login).

One can login to entra account by https://login.microsoftonline.com/with his invitation external email as a login but second is not.

System asks to check spelling or contact administrator.

What might be the reason? which attribute is responsible for login?

Answer 1

Hi @Admin Ballzere
Thank you for posting your query on Microsoft Q&A.

I understand that you are converting 2 users to external B2B collaboration and one of the users is facing issue "username may be incorrect".

• Before you invite the user, make sure the User.Mail property of the internal user object (the user's Email property in the Microsoft Entra admin center) is set to the external email address they'll use for B2B collaboration. If the internal user has an existing mailbox, you can't change this property to an external email address. You must update their attributes in the Exchange admin center.
• When you invite the user, an invitation is sent to the user via email. If you're using PowerShell or the invitation API, you can suppress this email by setting SendInvitationMessage to False. Then you can notify the user in another way. Learn more about the invitation API. Follow the document for more information: https://learn.microsoft.com/en-us/entra/external-id/invite-internal-users

Hope this helps. Do let us know if you have any further queries.

If this answers your query, do click `Accept Answer` and `Yes`.

Answer 2

User attributes properties

B2B mail error

UPN error