Windows 11 24H2 Home and Pro editions will stop receiving monthly security and non-security updates starting October 13, 2026, as per Microsoft's lifecycle policy. This end of support means devices running these editions will no longer get patches for new vulnerabilities or other updates. Microsoft recommends upgrading to Windows 11 25H2, which has been generally available since September 2024. Enterprise and Education editions of 24H2 remain under mainstream support until October 2027. Automatic upgrades to 25H2 will occur on unmanaged devices, with user options to delay restarts.

Devices running Windows 11 24H2 Home and Pro editions will become increasingly vulnerable to security threats after October 13, 2026, due to the cessation of security updates. This increases the risk of exploitation of newly discovered vulnerabilities. Users who do not upgrade to a supported version may face elevated security risks and compliance issues.

Users and organizations should upgrade affected devices to Windows 11 version 25H2 to continue receiving security updates and protections. Microsoft manages automatic upgrades for unmanaged devices, allowing users to control restart timing. Enterprise and Education edition users on 24H2 should continue to apply updates until October 2027. No other specific mitigations are indicated.