{"id":1579,"date":"2026-11-13T10:38:00","date_gmt":"2026-11-13T16:38:00","guid":{"rendered":"https:\/\/cmitsolutions.com\/lasvegas-nv-1206\/?p=1579"},"modified":"2026-11-13T10:38:00","modified_gmt":"2026-11-13T16:38:00","slug":"microsoft-365-outage-jan-and-nov-2026-las-vegas-guide","status":"publish","type":"post","link":"https:\/\/cmitsolutions.com\/lasvegas-nv-1206\/blog\/microsoft-365-outage-jan-and-nov-2026-las-vegas-guide\/","title":{"rendered":"Microsoft 365 Outage: Jan and Nov 2026 Las Vegas Guide"},"content":{"rendered":"
\nIT Advisory<\/span><\/p>\n

Microsoft 365 Outage: What Las Vegas Businesses Learned in January and November 2026<\/h2>\n

Outlook and Teams went down twice this year. The second time was yesterday. Here is what happened and what to set up before the next one.<\/p>\n

Published by CMIT Solutions of Las Vegas \u00b7 Cybersecurity \u00b7 5 min read \u00b7 Updated November 13, 2026<\/p>\n<\/div>\n

Microsoft 365 Outage Update: November 12, 2026<\/h2>\n

A Microsoft 365 outage<\/strong> knocked out Outlook, Teams and other Microsoft services on Thursday, November 12, 2026, the second major disruption this year for Las Vegas businesses that run on the platform. User reports started around 12:39 p.m. Eastern (9:39 a.m. here in Las Vegas). Within half an hour, Downdetector had logged more than 129,000 Outlook problem reports, and the count reached nearly 140,000 by 1:30 p.m. Eastern.<\/p>\n

Microsoft tracked the incident in the admin center as MO1550821<\/strong> and EX1550543<\/strong>. Affected services included Exchange Online (Outlook), Microsoft Teams, SharePoint Online, Microsoft 365 Copilot and Microsoft Defender XDR. Microsoft said the cause was “a number of servers being unexpectedly unavailable,” which overloaded the servers still running. It ruled out a traffic surge, and nothing Microsoft has published points to a cyberattack. As of late Thursday afternoon, Microsoft had not declared the incident fully resolved.<\/p>\n

If you are still seeing delayed mail today, check your tenant’s Service Health page before you start troubleshooting your own network. Then read the January section below. The pattern is the same, and so is the fix.<\/p>\n

\nKey Takeaway<\/span>
\nTwo Microsoft 365 outages in one year, both landing in the middle of the Pacific business day. If your company’s only way to reach staff and clients is Outlook and Teams, an outage like this stops your business, not just your inbox.<\/em>\n<\/div>\n

The January 22 Microsoft 365 Outage (MO1221364)<\/h2>\n

The first big one hit mid-day on January 22, 2026, under incident MO1221364<\/strong>, one day after a smaller outage on January 21. Thousands of North American businesses lost Outlook email, Teams chat and Microsoft Defender alerts. For Las Vegas organizations that run around the clock, from casino floors to law firms, that meant hours of stalled work.<\/p>\n