The October nightly update has another mistake: on many machines, the brightness of the screen is reduced to 50 percent.
The problem is now: Anyone who believes that the settings listed in the aforementioned article can still be changed by the October install upgrade installed will have their eyes open when they visit the "Adaptive Brightness" setting: they are missing there.
You can try to manually increase the brightness: use the brightness keys directly on the laptop. If it does not, try it Start / Settings (gearsymbol)/ System / Display, There is a slider switch to "change the brightness". Maybe it helps; then that would be just the first breakthrough.
Firmly tighten the brightness
If the device does not respond, stop the so-called "Display Improvement Service". press Windowsbutton +R, tap services.msc and press enter, Double-click Preview Improvement Service. to stop Turn off the service using the appropriate button Start type on disabled that.
Stop or disable the "View Improvements" service
It is best to restart the computer once. Now at least the brightness settings need to be with the laptops button or with the sliders in Windows Settings work.