Sending, receiving, and organizing email in Outlook.com
Check Microsoft’s service-health page first because Outlook.com is currently receiving broader disruption reports, and an HTTP 500 response can occur when the service cannot process the request ^1^.
What to do
- Open Microsoft service health and look for an active Outlook.com or Microsoft 365 incident:
https://status.cloud.microsoft/Office - If an incident is listed, local changes are unlikely to resolve it. Wait for Microsoft to mark the incident as restored, then reload Outlook.com.
- Use the standard Outlook.com entry point instead of the
/mail/mightaddress shown in the error:- Open https://www.outlook.com
- Sign in with the Microsoft account associated with the mailbox. Microsoft identifies this as the supported Outlook.com sign-in process ^2^.
If service health shows no incident
Test the session in a private browser window:
- In Edge, press Ctrl+Shift+N; in Chrome, press Ctrl+Shift+N.
- Open
https://www.outlook.comand sign in. - If Outlook works privately, close Outlook tabs in the normal browser.
- Clear the browser’s cached files and cookies for Outlook/Live, close all browser windows, and sign in again. Microsoft documents signing out, clearing the cache, closing all browser windows, and signing in again as an Outlook.com recovery sequence ^3^.
- If private mode also fails, test another browser or device. If the same mailbox returns HTTP 500 everywhere while other sites work, that points away from a single-browser session problem.
If the error continues after service recovery
If Outlook opens far enough to show its menus:
- Select Help on the top menu.
- Search for HTTP 500.
- If self-help does not resolve it, scroll to Still need help? and select Yes to contact Outlook.com support by email ^4^.
If Outlook never opens, use the Microsoft account sign-in helper referenced on that support page. Do not apply Outlook 2016 registry fixes or Exchange Server updates; those address different desktop or on-premises scenarios, not Outlook.com webmail.
References