Office 365 is a complex cloud-based service and has reputation for it's stability, with it going down occasionally.
Step-by-step guide
This guide is a general guide on where to look to validate whether Office 365 is experiencing issues or not.
- Check Reddit; are other users report issues to these subreddits?
- Check Twitter; are other people reporting similar issues?
- The Official Microsoft 365 outage account: https://twitter.com/MSFT365Status
- Search query: https://twitter.com/search?q=%40MSFT365Status&f=live
- Check the official Microsoft Service Health Status locations; these locations - if they contain an outage will generally given you more complete information including IDs, status details and affected services.
- https://status.office365.com/
- https://portal.office.com/adminportal/home#/servicehealth - Note this page will obviously only work, if Microsoft 365 admin center is operational
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