As mentioned before, the dark mode feature is only available in Windows 10 with version 1809 update or later. If you don’t see the said “choose your default app mode” option in the personalize settings, your Windows 10 probably does not have the version 1809 update installed. “Choose your default app mode” missing or not working Then, restart your computer for the changes to take effect.

Select Dark to switch your Windows 10 to dark mode. On the right, scroll down until you see the option that reads “ Choose your default app mode“. Here’s how to do it: Follow step 1 in the instruction above to open Personalize settings. If the solution above doesn’t work to fix your dark mode related issue, make sure that you have actually turned on the dark mode option in Windows 10. The proper file explorer with dark mode turned on should look like this (as shown in the screenshot below). Optionally, you can switch back to the custom theme you were using if you don’t like the default Windows theme.

The dark mode issue should be fixed by now.

Under Apply a theme, select the Windows default theme.

Optionally, you can access to Personalize from the Settings app.

Right-click anywhere on your desktop and then select Personalize.

Windows search bar white