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Also, at the time, that user did not have MFA turned on. In the instances that this occurs the effected user is not new to MFA but has been running it for at least months. The problem appears to randomly affect users (I’ve had it affect myself once too), and the only solution appears to one of (or a combination of) the options in the OP. Out of 140 staff the problem seems to occur once every 2-3 weeks on average.
Additional resources
This is now the 2nd machine that presents the same issue. I have a valid MS 365 subscription that includes 5 device licenses. On the main machine where I have been using the suite, now my account is deactivated and if I try to authenticate, it looks like it works but then get the "Fix", "Authenticate", "Activate" or "Resolve" buttons, all of which do nothing. I checked my MS account info page, subscription is fine. I had this exact issue on another machine, that after 2.5 hours on the phone with MS support (via Zoom), the solution was to uninstall MS Office 365 and reinstall it.
Microsoft Office 365 Endless Authentication Loop Issue
FYI outlook 2013 requires a registry setting to work with MA.These versions have the Logon network security setting disabled or removed from the Microsoft Exchange email account settings.I have a valid MS 365 subscription that includes 5 device licenses.Modifying the Outlook profile by using the "Profiles" registry path is not supported and may cause your Outlook profile to be in an unsupported state.Serious problems might occur if you modify the registry incorrectly.Have looked all over and people have all sorts of possible solutions, but nothing we found to resolve the issue and get a new issue daily and just keep going through until it eventually works.The user had Office 2015 and Office 2016 credentials and Teams credentials that we deleted.
In each case the fix has either been one of the above items or a combination of them. There doesn’t appear to be any pattern to the issue occurring or the problem being limited to any specific computer or user. By chatting and providing personal info, you understand and agree to our Terms of Send/Receive Error 0X800Ccc0E Fix Service and Privacy Policy. I disabled the Zoom and Adobe PDF plugins and it stopped prompting me immediately. My client’s Outlook will only continuously ask for the password after MFA is enforced and Office.com has been logged in. It would be nice if it distinguished between your password and the app password.
Outlook stuck in an MFA loop
Close and open your web browser again and go into Outlook OST vs PST repair SuiteFiles. You will most likely need to enter your Microsoft 365 credentials again so ensure you tick any box that says remember my credentials but it should now work for all future documents you open and not require your credentials. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. I regret that you are experiencing issues with your Microsoft installation.
Outlook 365 Password Prompt Issue on Windows Desktop
You can reply to reactivate the question if you decide you want to continue. Let's Exchange connectivity diagnostic start by answering a few simple questions to understand the problem. We have been experiencing the exact same issue for months now. I experience the issue myself as well, every once in a while. On the off chance that none of these things solve this issue for you, please contact our support team at