Why only Windows 11 23H2 is available? Not the 24H2

Windows 11 24H2 is not showing up because Microsoft is rolling it out in phases. Even if your device is fully compatible, Windows Update may hold back 24H2 until:

1. Compatibility checks pass – Microsoft uses “safeguard holds” if your hardware or drivers have known issues with 24H2.
2. Rolling update waves – 24H2 is released gradually, so some devices simply haven’t been placed in the next rollout group yet.
3. Policy restrictions – If your PC shows “Some settings are managed by your organization,” a group policy or registry setting can also delay feature updates.

This is normal.
23H2 is the latest version offered to your device today, but 24H2 should appear automatically once Microsoft lifts the safeguard for your hardware.

If you want 24H2 sooner, you can check these items:

• Make sure Windows 10 is fully updated before upgrading.
• Remove any third-party antivirus or old drivers that may block the update.
• Ensure no feature update deferral policies are set (Group Policy / Registry).
• You may also install 24H2 manually using the official ISO once Microsoft marks your device as eligible.

If the Windows Upgrade Assistant is only offering you the 23H2 update instead of the latest 24H2, it could be due to several reasons. Microsoft often releases feature updates in stages, prioritizing stability and performance, so not all devices receive the latest update at the same time. Your device might not meet certain prerequisites for the 24H2 update, such as hardware compatibility or specific software configurations. Additionally, the rollout may still be in progress, and availability can vary based on geographic region or the specific Windows version you’re currently running. You can check for updates manually via Settings > Update & Security > Windows Update, or consider waiting a little longer for the broader rollout of 24H2.

Most probably your PC does not meet certain system requirements of Windows 11 24H2.

Lack of bandwith. bits and bytes, /etc

Make sure your device meets all Windows 11 primary requirements:

https://www.microsoft.com/en-in/windows/windows-11-specifications?r=1

If your device meets all requirements, try upgrading via Windows 11 24H2 ISO file:

https://www.kapilarya.com/how-to-upgrade-to-windows-11-version-24h2#method-2-upgrade-to-24h2-from-iso-file

Let us know if this helps! 

Note: Included link in this reply refers to blog by a trusted Microsoft MVP.