Sending, receiving, and organizing email in Outlook.com
The issue remains unresolved. I have already tested multiple browsers, private browsing, two devices, Wi-Fi, and mobile data. Microsoft account sign-in works, but Outlook.com and its Help page do not load, so I cannot use the support route you suggested.
Please connect me with a human support agent and create a case to investigate Outlook.com mailbox access. Please provide a case reference number and check whether a service incident or mailbox-specific fault is preventing access.