Open the windows 10 task manager: Shift + Ctrl + Esc key. Alternatively the classic Ctrl + Alt + Del. You may also right click a blank area on the taskbar (where the clock and start menu is displayed) and choose the task manager.

Go to the startup tab and look for f.lux. I've never once had an issue with f.lux nor being in the startup list so if it's not there just reinstall the program.

Night Light is enabled. It's a Windows 10 feature. Turn it off.

I believe this is a false positive.

Impressive that they are removing files from the app store containers. noshow is an extremely small file that just launches f.lux with /noshow.

Pretty sure it is arriving intact - signing is managed by Microsoft.

Yes doesn't work for specific applications either. Would be a great fix.

Two things:

We keep the device awake for Philips Hue, but there is an Options menu checkbox to turn this off, so it will sleep and stop updating your lights. The default is to stay awake.

Also, if the device is on battery power and charge is below 66% we allow it to sleep, so this mostly applies to plugged-in devices.

We stopped looking for changes to color profiles frequently, due to a major memory leak in Windows May 2019 update. If you change color profiles, you now have to restart f.lux (or wait an entire day for us to check).

@ffuxi Great idea, I am missing this ability as well.

You have to turn off Windows Night Light.

Interesting, I was unaware of the corporate build. $15 seems perfectly reasonable for a personal license, I think I paid $50 for Actual Window Manager.

It appears f.lux has updated itself again to 4.104, and the full screen issue is fixed. The second issue I mentioned might have happened on the new version, or it might have happened as f.lux updated itself to the new version, but since I don't have control over updates, and f.lux doesn't report when it last updated, I have no way of knowing. It is a basic requirement that I be able to freeze versions of software on my computer, in part so that I can give accurate feedback and bug reports.

I uninstalled FLUX cause of this..

It can conflict with other apps in the system, but generally it should work fine with any number of monitors.