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o365 管理者 0 Reputation points


Microsoft azure より外部ユーザーへ招待したところ、





Azure Active Directory
Azure Active Directory
An Azure enterprise identity service that provides single sign-on and multi-factor authentication.
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  1. JamesTran-MSFT 32,876 Reputation points Microsoft Employee

    @o365 管理者

    Thank you for your post!

    I understand that you're having issues with Azure AD B2B where you invited an external user and when the user is trying to accept the invitation, you're running into an unexpected, attached file issue. To hopefully help point you in the right direction or resolve your issue, I'll share my findings below.


    When it comes to your attached file issue during the invitation redemption process, I wasn't able to find anything specific on this, but the external user should also be able to redeem your invitation by:

    1. Selecting the Accept invitation button.
    2. Or copying the URL and pasting it into a private browsing session rather than clicking on the URL from the email.

    User's image

    Depending on the error message that you're receiving, you can also reference the Troubleshooting Azure Active Directory B2B collaboration documentation for more details:

    I hope this helps!

    If you're still having issues, can you share a screenshot of the error message that you're running into so I can gain a better understanding of your issue.

    Thank you for your time and patience throughout this issue.

    If the information helped address your question, please Accept the answer. This will help us and also improve searchability for others in the community who might be researching similar information.

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