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.

• There is no prompt/ notification in my Microsoft Authenticator to put the number.
• There are a number of possible explanations for why verification codes don't always arrive.
• In those 2 times we have user sign back in via OWA first then Outlook, and also the reverse order.
• 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.
• Also, make sure they’re using apps that support 2FA—older clients sometimes skip the prompt.
• If you no longer have access to the phone number or email address, or you need to add another way to sign in, select I don't have any of these when trying to sign in and follow the prompts.
• After your settings are cleared, you'll be prompted to register for two-factor verification the next time you sign in.

I can't sign in after multiple attempts

When you see a message asking you to make sure you can receive a verification code, verify or add new security info. You can skip it for 24 hours at a time, but after seven days from the first notice you'll modern authentication troubleshooting have to verify or add new security info before you can sign in again. In those 2 times we have user sign back in via OWA first then Outlook, and also the reverse order. Microsoft works to protect you, your accounts, and our services by assessing the trustworthiness and credibility of every sign-in, sign-up, or customer interaction. If your actions trigger alerts or deviate significantly from your typical patterns, we might interpret it as potentially risky behavior, leading to temporary block where we won't send codes.

Further help and support

A vast community of Microsoft Office365 users that are working together to support the product and others. At first logon, i was prompted for MFA Outlook stuck updating folders solution and connected successfully. If none of the recommendations on this pagt, contact your IT administrator.





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..

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