arm64 update

The arm64 update tag covers discussions about cumulative updates and servicing stack updates for Windows 11 on ARM64 hardware. A recurring theme is the post-checkpoint cumulative update model, where updates like KB5086672 require a prior checkpoint package (e.g., KB5043080) and must be installed in a specific order. Users troubleshooting failed installations on ARM64 systems often need to let DISM resolve the dependency chain or manually install MSUs in the correct sequence. The tag reflects the complexity of Windows Update servicing for ARM64, including prerequisites and order dependencies that differ from x64 systems.