Techcrunch

Microsoft 365 Outage Affects North American Users for Nearly 10 Hours

First seen 23 Jan 2026, 22:10 UTC • Techcrunch

•28.7

Article Content

Include sub-articles 1 / 1

Browse articles

ThreatCluster

Microsoft 365 experienced a significant outage affecting services like Outlook, Defender, and Purview. The issue began at 1937 UTC, impacting users' access to emails, files, and meetings due to a malfunctioning portion of service infrastructure in North America. Microsoft is working to restore the affected services.

How this analysis works

Continue Reading

Microsoft Office 0-day Vulnerability CVE-2026-21509 Exploited; Emergency Fix Released APT28 Exploits Zimbra Vulnerability in Ongoing Attacks Against Ukraine Microsoft SharePoint Attacks: Over 400 Victims Including US Agencies Russian SVR Exploits SolarWinds and Other Vulnerabilities Against U.S. Networks FortiWeb WAF Vulnerability Enables Full Admin Control Exploitation Widespread DNS Poisoning Campaign Targets Hotel Wi-Fi to Steal Credentials

Microsoft 365 Outage Affects North American Users for Nearly 10 Hours

Article Content

More articles in this cluster

Attack Flow

Defensive Countermeasures

Extracted Entities

Continue Reading