How to patch Windows 10/11 for custom themes UPDATE 2021/2022
Download UltraUXThemePatcher: https://mhoefs.eu/software_uxtheme.php?ref=syssel&lang=en
Download OldNewExplorer: https://m.majorgeeks.com/files/details/oldnewexplorer.html
Download StartIsBack++: https://www.startisback.com/
Always create restore point!!!
The patch is supported all the way up to WINDOWS 11.
Make sure before applying custom theme that the theme is supported for version of your Windows.
-Example: Theme made for 1803 version probably will not work on 21H2 version.
-If you want to update Windows, uninstall the UX theme patch.
-Select Windows default theme.
-Uninstall OldNewExplorer and start is back,
-Then UPDATE the Windows, after that you can install ux theme patch and other apps that comes with customizing windows for custom themes