Microsoft 365 and Outlook experienced outages Monday, beginning around 10:15 a.m., according to Downdetector.
The Microsoft 365 Status account on X said it would look into the issue reports Monday morning and confirmed an hour later that it was experiencing difficulties.
"We've confirmed that users may experience degraded functionality with various Exchange Online functionalities," the post read. "We're reviewing service telemetry and diagnostic data to isolate the source of the issue."
We've confirmed that users may experience degraded functionality with various Exchange Online functionalities. We're reviewing service telemetry and diagnostic data to isolate the source of the issue. For more information, please see EX1464935 in the admin center.
– Microsoft 365 Status (@MSFT365Status) August 31, 2026
The Microsoft 365 outage peaked around 12:48 p.m. with 2,044 reports, according to Downdetector. The Outlook outage peaked about an hour and a half earlier with 6,015 reports, according to Downdetector.
Microsoft wasn't the only widespread outage Monday. Downdetector reported 1,405 OpenAI outages at its peak around 12:15 p.m.
ChatGPT posted on X acknowledging the outage around 1:30 p.m.
ChatGPT Work isn't working right now. Sorry about that, we're working on a fix!
"User across multiple subscription plans may be unable to start or continue tasks in ChatGPT Work," the OpenAI website reads. "We are continuing work on implementing a mitigation."
The OpenAI website listed APIs, Codex, FedRAMP and Ads Platform as operational, but ChatGPT was labeled partial outage.
This article originally published at Microsoft 365, Outlook and ChatGPT users report outages Monday. Here's what we know..
