Today, Microsoft Account services went black again after the outage happened few weeks ago. This time, the blackout affected (and still seems to affect) login services required to use the most common Microsoft services like Onedrive, Xbox and Outlook.
Microsoft stated in the Office status page that a fix for the issue has been deployed, but there is some residual impact, which is supposed to fade within few hours.
If you still have problems, keep trying. We’re gonna update this post when the service completely restores