Microsoft may limit repeated authentication attempts that are performed by the same user in a short period of time. Waiting ten minutes before trying again will usually resolve this, if not you should contact the IT Service Desk for support. I checked the user specific settings and they are ALL disabled. Try going here and looking a the specific users, check if they are set to disabled.

• We understand this can be frustrating and disruptive, but here are some of the reasons behind blocks, and guidance on how to overcome them.
• A vast community of Microsoft Office365 users that are working together to support the product and others.
• When you close it and reconnect, it then goes through as expected.
• I have 'single sign out' enabled on my saml auth profile.
• To investigate further, ask an IT administrator to look at the Microsoft Entra sign-in logs.
• If you suspect someone else is trying to access your account, contact your IT administrator.
• The error could be caused by malicious activity, misconfigured MFA settings, or other factors.
• When I switch from company's Teams to client's, I am asked to log in.

I can't sign in after multiple attempts

Should you not wish or not be able to use an app you can choose the phone (text) or alternative phone method and provide a phone number, this data is only used to support the security of your account. To change the language, you need to remove it and re-add the security info to your account using the steps above. If you don't know, or have forgotten your password, and you don't have access to any of your security info for verification, follow the steps below to recover your account. There may be heavy compromised traffic coming from your geographical location and to protect you, we may also not deliver codes to your account as fast rebuild Outlook data file quickly as we would like. While rare, these issues will be automatically resolved after a certain period of time. There are a number of possible explanations for why verification codes don't always arrive.

Further help and support

Outlook still keeps prompting ONLY with the old school grey box. It's indicating that the MFA must be done, but nothing's opening/prompting for it. OWA, Windows sign-in, and Outlook mobile Fix Outlook Not Opening After Windows Update app proceed to the MFA registration and/or use.

I've lost access to my security info

Read through the list of the most common causes, and see if any of them apply to you. Security verification messages are sent in the language of your account when the security info email/phone number was added. We won't ask you to verify your security info every time you sign in. Occasionally, we might ask you to check it again—for example, if you haven't signed in for a long while.

Troubleshooting common problems with Multi-Factor Authentication (MFA)

The error could be caused by malicious activity, misconfigured MFA settings, or other factors. To investigate further, ask an IT administrator to look at the Microsoft Entra sign-in logs. I’d start by checking if those users are somehow excluded from security defaults or if there’s a conditional access Outlook profile repair and recovery steps policy overriding them. Also, make sure they’re using apps that support 2FA—older clients sometimes skip the prompt.



Log off, log back in again and does not prompt for MFA anymore. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. Find solutions to common problems or get help from a support agent. If you are sure the email address is correct, you may need to recover your account.

Question activity

We understand this can be frustrating and disruptive, but here are some of the reasons behind blocks, and guidance on how to overcome them. Will log a tac also as not finding many docs on this issue on pan site atm. However i fear this might only be for BYOD / third parties and not applicable to Azure AD joined devices ie company laptops..