I can't log in to the outlook mail

Check Microsoft’s Service Health Status first; if Outlook.com is not green, wait for Microsoft to restore the service rather than changing your account or password.^1^

If service health is green

The envelope/loading screen can be caused by the browser or an extension:

1. Open Outlook.com in an InPrivate/Incognito window.
2. If it loads there, return to the normal browser and temporarily disable AdBlock, uBlock, pop-up blockers, and other extensions.
3. Add Outlook.com to the ad blocker's allowlist, then refresh the page. Microsoft specifically documents AdBlock and uBlock as causes of Outlook.com loading or timeout problems.^1^
4. If it remains stuck, clear cookies and site data for Outlook/Microsoft sign-in sites, close the browser completely, and try again.
5. Test another supported browser or another network. If another browser works, continue using it temporarily while repairing or resetting the affected browser.

Determine whether the mailbox or account is affected

Try signing into the Microsoft account separately:

• Account sign-in works, but Outlook.com remains on the envelope: this points to an Outlook.com loading or mailbox-access problem rather than an incorrect password.
• Account sign-in also fails: use Microsoft’s Sign-in Helper. It checks the account and provides the recovery action for detected problems.^2^
• Microsoft asks for identity confirmation: complete the verification prompt. A new device, location, or unusual activity can trigger this check.^3^

If this is a work or school mailbox, contact your organization’s IT administrator instead of using personal Microsoft-account recovery. The administrator needs to check the Microsoft 365 service status and your account or license.

Escalate if it fails everywhere

If Outlook.com stays on the envelope in private browsing and also fails on another browser, device, and network while the Microsoft account itself signs in:

1. Open Microsoft’s Outlook.com sign-in support page.
2. Select the support link for users who cannot sign in.
3. Report:
   • When the problem began.
   • That sign-in reaches the envelope but the mailbox never opens.
   • Browsers, devices, and networks tested.
   • Whether Microsoft account sign-in succeeds.
   • Any HTTP code or X-OWA-Error shown.

Microsoft provides a separate contact route when Outlook.com cannot be opened, because in-product Help is unavailable in that situation.^3^

Do not repeatedly reset the password when the password is accepted and only the mailbox loading screen hangs; that does not address a service or browser-loading failure.

References

1. Fixes or workarounds for recent issues on Outlook.com | Microsoft Support
2. I can't sign in to my Microsoft account | Microsoft Support
3. How to sign in to Outlook.com | Microsoft Support