However, this can also be the cause of the problems you are having with dark theme in File Explorer. One of the great things about Windows 10 is that it allows for plenty of customization options and lets you switch between a variety of themes. Method two: reverting to the default theme Once you have successfully upgraded to the 1809 build, you can try to activate dark theme in File Explorer again and see if the issue has resolved itself. If this is the case, go on and install the update. Check the version section: if it’s not version 1809, it means that you don’t have the update installed.
You will be able to see all the basic data for your system.
Here’s how to check whether you have the update installed: Note that dark theme for File Explorer has only been added to Windows 10 as part of the latest October update - thus, you will need to have the latest build (1809) installed before you can use dark mode for File Explorer on your PC. Sometimes, the reason behind dark theme not working for File Explorer on your PC may be as simple as a missing update.
