O365 - Email/Outlook
| 2026-04-20 | Status | Description |
|---|---|---|
| 02:11 PM |
|
User impact: Users may have experienced timeouts or errors when accessing their Exchange Online mailboxes through Outlook on the web. Final status: After the deployment of our solution, our additional service monitoring has validated that our code change has addressed the impacting networking problems for the subset of service infrastructure, and the impact has been remediated. Scope of impact: Some users in Canada attempting to access their Exchange Online mailboxes through Outlook on the web may have been affected. Start time: Thursday, April 9, 2026, at 10:00 AM AST End time: Thursday, April 16, 2026, at 1:00 AM AST Root cause: A portion of infrastructure responsible for facilitating mailbox access requests through Outlook on the web was performing below acceptable thresholds due to a networking issue, resulting in impact. Next steps: - We're further analyzing the isolated networking issue to help us determine its source in our effort to prevent similar issues in the future. |
No Issue
Disruption
Outage
