Is Outlook Down? Microsoft 365 Outage Hits Thousands (Aug 31, 2026)

"Outlook outage" shot to the top of technology searches on Monday, August 31, 2026, as thousands of people found their email suddenly misbehaving. Here's what's going on and what you can actually do about it.

What's affected

According to Tom's Guide and reporting on the outage:

• More than 13,000 users reported problems on Downdetector, with reports climbing through the morning (US Pacific time)
• Complaints center on opening mailboxes, sending and receiving, and search failing or lagging
• The disruption is widespread, not isolated to one region

Why the status page can say "operational"

Here's the confusing part users keep hitting: Microsoft's own status checker may show all products operational even while thousands report failures. That's not necessarily a contradiction — provider dashboards often update slowly, reflect only confirmed/large-scale incidents, or measure the service at a level that misses regional or partial failures.

What to do during an outage

The takeaway

When Outlook goes down, the most useful move is the calmest one: verify it's a provider outage, switch to webmail or mobile if you can, and wait. A trending "is Outlook down" spike almost always means the problem is on Microsoft's side, not yours — and it's usually resolved in hours, not days.

This is a developing story based on outage reports as of August 31, 2026; status and scope may have changed since publication.

Sources

• Is Microsoft Outlook down? Live tracking — Tom's Guide
• Microsoft Outlook down for thousands, Downdetector reports — GV Wire