OS & Apps Switching from Dark Mode to Light

[Freedom33101]

On my machine I set everything (the OS, apps, browser, etc) to dark mode or a dark theme. It makes it easier on the eyes. Ever since I installed Kaspersky, the settings to my Windows 10 OS, Mozilla Firefox & DuckDuckGo keep reverting back to light mode. I will change it back to dark mode but then the next day it reverts back to light mode. Any suggestions or fixes on how to stop this issue? Thank you in advance.

[Berny]

@Freedom33101 Welcome.

Please check the option “Automatic  switch between dark and light mode” in your Windows settings ?