Microsoft users caught up in global M365 outage

ملخص مفصل

Some infrastructure "unavailable".

Microsoft is in the midst of a major outage that is “potentially” impacting a number of M365 services, notably Exchange Online access, worldwide.

Australian enterprise users are likely waking to email not loading and an error message that "something went wrong" with a “recommended action” to refresh.

The company’s status page, which is slow to load, indicates that Teams, SharePoint Online, Microsoft Copilot 365 and Microsoft Defender XDR may also be impacted.

Microsoft has traced the issue to a “portion of infrastructure … experiencing elevated load across multiple regions, which is likely contributing to the connectivity errors,” according to a post on X.

Specifically, it said that "a number of servers [are] unexpectedly unavailable; straining the remaining infrastructure."

It has since attributed the problems to a "specific component" on the servers that processes health checks, which Microsoft is now attempting to bypass with a "configuration change".

"We're testing a configuration change to address a problem that's causing servers to fail automated health checks and become unavailable," it said.

"In parallel, we've initiated a restart of all affected servers and are monitoring health as they return to service."

On its M365 status page, Microsoft indicated that it had also attempted to move traffic off the impacted servers and redistribute it to healthy infrastructure.

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