Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hello @Moroj Adil,
Thank you for posting your question in the Microsoft Q&A forum.
Based on your description, it sounds like your personal account has been added as a guest account in the organization's Microsoft 365 tenant to access the shared folder. Since the sign-in process is failing at the Microsoft Authenticator verification step, and reinstalling the app, changing networks, signing out/in, and having the organization resend the invitation did not resolve the issue, the problem may be related to the MFA registration associated with your guest account in their tenant.
I would recommend contacting the IT administrator of the organization that shared the folder with you and asking them to review and reset the MFA registration for your guest account.
You can share the following guidance with their administrator:
Reset MFA settings for the guest account in Microsoft Entra Admin Center
- Sign in to the Microsoft Entra admin center with an administrator account.
- Go to Users.
- Locate and select the guest user account that corresponds to your personal email address.
- Open Authentication methods.
- Select Revoke sessions.
- Select Require re-register MFA.
- Save the changes.
The administrator can refer to this article for detailed instructions: Manage authentication methods for Microsoft Entra multifactor authentication - Microsoft Entra ID |…
After the reset is completed, ask the administrator to have you sign in again and complete the MFA registration process when prompted.
If you’re unsure who the Global Admin is , you can find guidance on locating them here: How do I find my Microsoft 365 admin? - Microsoft Support.
Thank you again for your time and understanding. I really appreciate your patience, and I’m here to help. Looking forward to your response.
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