Microsoft 365 sign-in issues [resolved]
9/28/20, 8:15pm --
Microsoft engineers have determined that a specific portion of their infrastructure is not processing authentication requests in a timely manner.
They are pursuing mitigation steps for the issue, as well as rerouting traffic to alternate systems to provide further relief to the affected users.
9/28/20, 7:14pm --
Microsoft engineers identified that reverting the recent change did not alleviate sign-in issues to Microsoft services as expected.
They are now rerouting traffic to alternate infrastructure to improve the user experience while continuing to investigate the issue.
9/28/20, 5:54pm --
Microsoft engineers have completed reverting the change which was likely causing sign-in issues and are monitoring to ensure services are recovering.
9/28/20, 5:20pm --
Microsoft engineers have identified and are reverting a recent change to the service which may be causing or contributing to sign-in issues.
9/28/20, 4:56pm --
Microsoft engineers are investigating a sign-in issue affecting access to multiple Microsoft 365 services.
Further information will be provided as details emerge.