A Microsoft app for iOS and Android devices that enables authentication with two-factor verification, phone sign-in, and code generation
Hi Neil Orton
Thank you for reaching out to the Microsoft Q&A forum.
I'd recommend first trying to access the Security info page using an InPrivate/Incognito window or a different browser to rule out a browser-related issue.
If the issue persists, please follow the steps in the following article to reset your MFA methods and then re-register Microsoft Authenticator: Manage authentication methods for Microsoft Entra multifactor authentication - Microsoft Entra ID
If the newly registered Authenticator still disappears from the Security info page, I'd recommend opening a support request with Microsoft for further investigation.
For instructions on raising a support ticket, please refer to: Get support - Microsoft 365 admin | Microsoft Learn.
Please understand that we're not Microsoft support, this is a user-to-user support forum. Moderators have no backend access and cannot directly intervene in Microsoft products. We provide only technical guidance and best-practice recommendations based on reported issues.
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