Unable to obtain the Windows 11 24H2 update through the Insider Program.

As of now, 24H2 is no longer latest version. 25H2 is latest version atm.

Check for known issues with 25H2 and see if they're related to you:

https://learn.microsoft.com/en-us/windows/release-health/status-windows-11-25h2

If none, then you can upgrade manually to 25H2 version directly:

https://www.kapilarya.com/how-to-upgrade-to-windows-11-version-25h2#method-3-upgrade-to-windows-11-25h2-using-iso-file

Let us know if this helps!

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