Open regedit.exe
,
go to Computer\HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Themes\Personalize
and set both AppsUseLightTheme
& SystemUsesLightTheme
DWORDs to 0.
Alternatively, download and save the windows-dark-mode.reg
file below as a .reg
file and run it.
Source: https://old.reddit.com/r/Windows11/comments/o1l55u/how_do_i_enable_dark_mode_on_windows_11/h21f69b/
It's regedit.exe not regedit.msc.
.msc files are Microsoft Managment Console files.