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Add How to Fix Microsoft 365 Login Loop Issue?

Cassie Nord 2026-01-09 15:33:51 +03:00
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Content<br>
In this case are you saying that there is a password prompt for the users credentials? Clear the Windows Credential manager or recreate the users Outlook profile. In fact if you just turned on MFA and you were not using MFA before you usually end up having to rebuild the profile and clearing the credential manager. If you are saying that they are getting multiple MFA prompts then this is an out of sync issue with the wrong code being used.
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
Today was the first time in about 2 months that I had the issue.I wonder if the compuer cached a new logon token or something that the old Outlook profile could use.In each case the fix has either been one of the above items or a combination of them.I then approve the login with my authenticator app.Outlook must be online or connected to complete this action.So figuring that was the same issue here, I did the same thing.If you are saying that they are getting multiple MFA prompts then this is an out of sync issue with the wrong code being used.
When we opened the old, existing profile it didn’t ask for ANY authentication, it just started working. 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. [rebuild Outlook data file quickly](https://campusbiasharaclub.com/read-blog/966_how-to-fix-microsoft-365-login-loop-issue.html) Serious problems might occur if you modify the registry incorrectly. Before you access it, back up the registry for restoration in case problems occur. We are looking at using conditional access policies where a user with a Domain joined PC is not prompted for MFA.
Outlook stuck in an MFA loop
I do NOT have this issue with the other laptop, an iPad, a MacBook Pro and [repair PST file without data loss](https://git.epochteca.com/stephentraeger/1941fix-outlook-not-opening-after-windows-update/-/issues/3) tablet. So figuring that was the same issue here, I did the same thing. I'm also getting Error 29, which the MS support rep couldn't explain to me. I even tried disabling my anti -virus while authenticating, that didn't work.
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](https://1nigeria.radiobenue.be.gov.ng/read-blog/703_repair-a-office-application.html) 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