Windows 11 21H2, 22H2/23H2, 24H2/LTSC 2024 and 25H2 (x64, ARM64) get automatic updates; 24H2+ checkpoint updates go in first; no SSU lookup for Windows 11; ESU cutoff for Windows 10 only. On a Windows 10 PC a Windows 11 image is serviced with the DISM of the Windows ADK Deployment Tools (offered and installed from Microsoft). Page 1 gets a Windows 10 / Windows 11 switch that follows the unpacked ISO.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013cSaUpQAuassH41sr1N9XN