In context: Microsoft Defender made its debut as a downloadable free anti-spyware program in the Windows XP days. Eventually, Microsoft turned into a proper antivirus solution (it's gone through a few ...

Microsoft 365, Exchange, Outlook, Teams and the Microsoft Store were all offline, according to Downdetector, with the reports peaking shortly before 3:30 p.m. ET.

Microsoft 365 services, including Outlook, Teams, Defender, and Purview, suffered widespread outages after a third-party networking issue disrupted enterprise access across North America.

Struggling with Windows Defender not turning on in Windows 11? Discover proven, step-by-step fixes to restore your security.