Updated to V4.118, still the same problem. At nighttime Alt PgUp/PgDn dims or brightens. It's 11:05 PM now and the range is 2% to 60%. But it doesn't dim as much as earlier this year, and does not become red tinted when dimmed, just remains neutral. Changed the pulldown to "recommended colors". It was on "custom colors" before, for some reason. Alt PgUp, PgDn now change between 0 and 14% but the brightness of the display does not actually change. In Features and Notifications, backwards alarm clock is selected, use display data for color accuracy, use GPU for better quality. Use Windows internal color table is not selected. Driver info is: NVIDIA 26.21.14.4112: NVIDIA GeForce GT 635 (20191024) Generic PnP Monitor, 597 x 336mm, built 2013 Chromaticities: R=0.679688 0.309570 G=0.209961 0.700195 B=0.147461 0.053711 W=0.313477 0.329102 sRGB gamut: 102%, AdobeRGB gamut: 99% Generic PnP Monitor, 521 x 293mm, built 2017 Chromaticities: R=0.650391 0.333008 G=0.316406 0.612305 B=0.152344 0.067383 W=0.313477 0.329102 sRGB gamut: 96%, AdobeRGB gamut: 66% Winlimit=0, 0 Monitor 1 on NVIDIA GeForce GT 635: VCGT=0 gamma=1 Monitor 2 on NVIDIA GeForce GT 635: VCGT=1 gamma=1 Windows Build: 19041.329 Um, the cancel button on the f.lux Options panel is greyed out and the Done button doesn't dismiss it! :) Same visual response on the HDMI and VGA monitors, one is not different than the other. Windows night light is off. No difference whether the strength is 0, 50, or 100, f.lux is still prevented from working. Turn night light on, f.lux still has no effect whether the strength is 0, 50, or 100.

This issue is still active in flux version 4.118 (non-beta). I am running flux on windows 10 home edition (x64 bit), version 2004, build 19041.329. I can provide additional info if any is needed. Note: I am experiencing the EXACT same problem as zsuraski.

@Betsy said in Flux Refuses to Appear as a Program Option: I turned on my computer today and flux is gone, it wouldn't come up. I reinstalled, once it's done installing it disappears. Any advice? What do you mean? Do you mean that the window slides down and disappears? Do you mean that the icon in the Notification Area goes away? If you’re referring to the window sliding down and disappearing, then that’s normal. If you’re referring to the icon disappearing, then check the hidden icons. To do that, click the button that looks like an upward pointing arrow.

I don't know of any reason it should be f.lux. Things to check: your "DPI" (under "scale and layout") in Settings. Logout and back in, sometimes it messes up after an update.

@mfeinstein thanks - yes all the notes since the previous version are there - but this readme is intended for normal releases. We pulled all the May 2020 Windows people into the beta temporarily to get the bug fixes out, but that will be turned off as soon as it's stable. (i.e. as soon as possible) Detailed notes are here: https://forum.justgetflux.com/topic/7507/windows-may-2020-update-2004/1

Now everything is working fine, thanks!

@herf said in Windows May 2020 (2004) Dimming no longer works: Do you have an automatic brightness feature on your machine? In 4.116, we are adding an advanced option to use the "internal" color controls - previously we were forcing it on, but we're trying to stop doing that. So you can see if that fixes it....but mainly I would like to find out what is conflicting instead. I do not. It's a desktop machine so f.lux is my only brightness control. Just updated to 4.116 and flipped that option on, which seems to have fixed it 👍

Version 4.115 reinstated the issue for me, so now I'm having the same problem again. :-(

Thank you - we will need to add a toggle for this - it didn't look that good when I tried it. :)

Just bought a brand-new starter kit, flux does not find my bridge. Was the old www.meethue.com/api/nupnp endpoint updated to https://discovery.meethue.com?

I had the same problem and it took me a while to figure out it was f.lux. Doesn't happen immediately after powering up, but rather takes a few hours before I notice it (it's on my second monitor, so it sometimes takes a while before I notice) May have something to do with the latest Windows update and/or freesync, both changes took place in the last 2 weeks Disabling f.lux and using the built-in Windows 10 nighttime mode fixes it