Method 1. Prevent Windows 11 to upgrade to v24H2 using Command Prompt.

The first and easiest method to block the installation of Windows 11 24H2, is to modify the registry through the command line.

1. Open Command Prompt as Administrator.

2. In command prompt windows, issue the following three (3) commands in order (press Enter after each command):

   reg add HKLM\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate /f /v TargetReleaseVersion /t REG_DWORD /d 1 reg add HKLM\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate /f /v TargetReleaseVersionInfo /t REG_SZ /d 23H2 reg add HKLM\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate /f /v ProductVersion /t REG_SZ /d "Windows 11"