Microsoft issued an October 9 reminder that Windows 11 version 23H2 Enterprise and Education editions reach the end of monthly updates on November 10, 2026. Its Windows message centre says that month’s security update will be the last for those editions.
The company recommends moving eligible devices to a supported Windows 11 version. Its lifecycle table separately lists support schedules by version and edition; this deadline does not mean every Windows 11 computer loses support.
This is a support-lifecycle notice, not a newly disclosed attack or a claim that devices stop working on the deadline. Organisations need to identify affected installations and check upgrade eligibility. Source: Microsoft Windows message centre, October 9, and its Enterprise and Education lifecycle record.