Hi SA189, This is Ramesh.

The Microsoft portal no longer offers the option to download the 23H2 ISO. However, two third-party projects can download the 23H2 ESD image from Microsoft and build the ISO.

One of them is the UUPdump project: https://uupdump.net/

Another option is AveYo's MediaCreationTool.bat file at GitHub.

https://github.com/AveYo/MediaCreationTool.bat/...

The above third-party projects download the official ESD from Microsoft's servers and then create the ISO.

Standard Disclaimer: There is a link to a non-Microsoft website. The page appears to provide accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as PUPs (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.

https://uupdump.net/known.php?q=23H2&p=1

Windows 11 23H2 ISO Download for US English:https://archive.org/details/win-11-23-h-2-english-x-64v-2_20240622Archive.org, also known as the Internet Archive, is a trusted digital library that preserves historical software, websites, books, and more. It is one of the few publicly accessible platforms where users can find older versions of Windows ISOs, including Windows 11 23H2, which is no longer be available through official Microsoft channels.The platform emphasizes long-term digital preservation, ensuring that older software versions remain accessible for users needing them for testing, archival purposes, or compatibility with legacy systems. Because of its reputation and commitment to digital history, Archive.org is widely used by tech enthusiasts, researchers, and developers.Unlike unofficial third-party websites that may host tampered or unsafe ISOs, Archive.org aims to preserve original software in its unmodified form. While caution is still advised and users should verify file integrity, the platform remains a valuable resource when official sources no longer provide specific Windows builds like 23H2.