Microsoft account authentication issues

Question

My Microsoft account has been unable to fully sign in to account.microsoft.com for several years. Authentication requests to login.live.com and login.microsoftonline.com return 200 OK, OAuth token acquisition completes, and complete-silent-signin redirects correctly (302). account.microsoft.com/account itself returns HTTP 200. Other Microsoft accounts sign in normally on the same device/browser, ruling out a local/client-side cause.

When clicking "Sign in," the browser briefly redirects to login.live.com and back, appearing to complete normally, but no session is established — the account remains signed out.

Inspecting the request headers on the login.live.com call, the cookies MSPAuth and MSPProf — which normally carry encrypted persistent-auth tokens — are being sent with the literal value "Disabled" instead of a token. This suggests persistent authentication has been disabled at the account level for this account, preventing login.live.com from establishing a session even though the redirect flow completes without any HTTP error.

The browser console additionally shows: "MeControl: Invalid AAD auth configuration" when account.microsoft.com attempts to load.

Request: please check whether MSPAuth/persistent authentication has been disabled on this account (I can provide the email privately) (possibly due to a security action, a hybrid Entra ID/AAD linkage, or account migration history), and re-enable it or resolve the underlying identity configuration issue.

Answer 1

Hi Lucas

I understand how frustrating this must be, especially since the issue has persisted for years.

Based on the information provided, the sign-in flow and redirects appear to complete, but no authenticated session is established for the affected account. Since other Microsoft accounts work normally on the same device and browser, this appears to require an account-specific review rather than further browser troubleshooting.

However, the MSPAuth and MSPProf values shown as “Disabled” do not, by themselves, confirm that persistent authentication has been disabled at the account level. The console message “MeControl: Invalid AAD auth configuration” may be useful diagnostic information, but only Microsoft Support can review the account’s backend identity configuration.

• Go to Contact Us: https://support.microsoft.com/en-us/contactus
• Click Show expanded list of products
• Select Outlook > Get Home support
• Type Outlook live chat in the search box, then select Get Help > Contact Support
• If you can’t sign in to the affected account, sign in with a different Microsoft account to access support options
• Under Products & Services, select Other Products > Outlook, then choose Chat with a support agent via web browser

Please note that this is a user-to-user support forum. Moderators, contributors including external Microsoft employees cannot directly intervene in Microsoft product features or access back-end systems. Our role is limited to providing technical guidance on reported issues, requests, or ideas only.

Thank you for your understanding. 

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