: Download the tool from the Microsoft Support Page and run it. Select "Create installation media for another PC" , then choose "ISO file" to save it to your computer. Minimum System Requirements
Download and open the latest version of (portable version works perfectly). Insert your USB flash drive into your computer.
If you have a paid subscription, you can download historical ISOs, including 23H2, from the Visual Studio portal Windows Insider Program:
: Restart your computer and enter your BIOS/UEFI settings. Ensure TPM 2.0 (or fTPM) and Secure Boot are enabled. Alternatively, flash your ISO using Rufus to strip away the hardware checks.