While installing the IXON VPN Client on Windows, the installer ends abruptly and error "Setup Wizard ended prematurely" is shown.

There is an issue with the Windows Installer policy on your computer that likely also affects other ".msi" installers.

You may need to log into Windows with an administrator account to make these changes.

1. Simultaneously press the windows key and R to open the Run window. Enter "gpedit.msc" to open your Local Group Policy Editor.
2. In the left menu, go to Computer Configuration > Administrative Templates > Windows Components > Windows Installer.
3. In the right pane, edit the Turn off Windows Installer setting.
   
4. Set it to Enabled and select Never, as depicted in the screenshot below.
    
5. Click OK to apply these changes.