"On October 8, 2024, Windows 11, version 21H2 (Enterprise, Education, and IoT Enterprise editions) and Windows 11, version 22H2 (Home and Pro editions) will reach end of servicing. The upcoming October 2024 security update, to be released on October 8, 2024, will be the last update available for these editions. After this date, devices running these editions will no longer receive monthly security and preview updates containing protections from the latest security threats.

"To help keep you protected and productive, Windows Update will automatically initiate a feature update for Windows 11 business devices not managed by IT departments when these are nearing end of servicing. Moving to Windows 11, version 23H2 keeps your device supported and receiving monthly updates that are critical to security and ecosystem health."

official documentation