Disabling Windows Server “Test Signing Mode” won’t remove the “For testing purposes only” wallpaper watermark

If you ever had to install private hotfixes from Microsoft, you most likely had to enable Test Signing (aka – Debug Mode) to install the binaries. Once done, you must uninstall the hotfix, reboot, then disable Test Signing and reboot again. But sometimes, the Windows desktop’s wallpaper will keep the watermark. What gives?! Let’s check […]