Night Light on Windows 10 1909 breaks display settings

[Hotzenwalder]

[UPDATE]

To find out where it breaks I started installing both laptops with a fresh installation of Windows 10 1909. One with the standard ISO from Microsoft and one with our custom build image. Both laptops are still fully functional after the installation. Display Settings gives no troubles and the Night Light also works and never crashes. Because of this I suspect the problem to be in one of the drivers that is installed during our task sequence. All drivers come from the HP driverpack for Windows 10 1903 x64.

First thing I will try is to install one of the laptops with our task sequence but without drivers and without joining it to the domain to see if everything still works as expected.

[ORIGINAL MESSAGE]

Last week | stumbled upon a strange issue with Windows 10 1909 on a HP EliteBook 850 G6 and as it turns out also a HP EliteBook 850 G3. The Windows 10 version is Windows 10 1909 Enterprise with the latest build (10.0.18363.476) in the Dutch language with a EN-US language pack added.

All seems to be working fine and I can select the Display Settings without any problem until I try to switch on the Night Light from the notification area on the laptop. The Night Light icon becomes active, but the Night Light itself does not work. When you you close the notification area and re-open it the Night Light is not active again and switching it on leads to the same behaviour. It just does not become active. 

This would not be a major issue if it didn't have a strange side-effect. When you have tried switching on the Night Light, log off the current user and login as a different user you cannot select the Display Settings anymore from the desktop. It briefly opens and closes again in a few seconds without any error message on the screen. In the event viewer you can find an event which doesn't really help

Faulting application name: SystemSettings.exe, version: 10.0.18362.449, time stamp: 0x066bf1a5

Faulting module name: msvcrt.dll, version: 7.0.18362.1, time stamp: 0xf5bdefd7

Exception code: 0x40000015

Fault offset: 0x000000000000ae72

Faulting process id: 0x12b8

Faulting application start time: 0x01d5a6b1d5a9de26

Faulting application path: C:\Windows\ImmersiveControlPanel\SystemSettings.exe

Faulting module path: C:\WINDOWS\System32\msvcrt.dll

Report Id: bbc1cafd-5319-4a17-960d-37a61804b485

Faulting package full name: windows.immersivecontrolpanel_10.0.2.1000_neutral_neutral_cw5n1h2txyewy

Faulting package-relative application ID: microsoft.windows.immersivecontrolpanel

Other settings are still available like Sound or Battery but selecting Display Settings results in the Settings closing.

You will also find that when logged in as the other user you cannot select the Night Light from the notification area as it is greyed out so now the Night Light is broken and the Display Settings are broken.

Every user that logs on to the laptop from that moment on has problems with the display settings. It won't work again.

The user logged on when you tried turning on the Night Light can still use the Display Settings and switch on the Night Light (still doesn't work). If however you delete the profile from the laptop and log back in with a fresh profile the Display Settings are also broken and the Night Light feature is unavailable.

After creating a dump when the Display Settings crashed I noticed a reference to bluelightreduction which is a registry entry used for Night Light. I compared the registry from a working system with a broken system and it turned out that on the broken system the key 'HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\CloudStore\Store\DefaultAccount' was missing

After exporting this key from a working system and importing it on the broken system everything is working again. You can select the Display Settings from any broken account where the registry key was imported and the Night Light function is also available again (still not working).

Graphics Card: Intel HD Graphics 520 or Intel HD Graphics 620

Intel Driver Version: 26.20.100.7463 from november 6th 2019
BIOS: R70 01.03.03 Rev.A (G6) or N75 01.44 (G3)
Windows 10 1909 build 476 (november 2019)

Latest driverpack for Windows 10 1903  from the HP site.

The Night Light is not working on Windows 10 1903 either. I haven't tried if the Night Light breaks the Display Settings in 1903 or lower. Will try if I find some time next week.

Does anyone else have this issue with the mentioned laptops (probably also broken on other G6 EliteBooks). Can anyone reproduce the issue on his or her laptop? The image we use for Windows 10 1909 is the Enterprise version and it's build from scratch with OSDBuilder. We haven't had any problems with the Display Settings before we started fooling around with the Night Light setting.

[Hotzenwalder]

I can confirm that at first with Windows 10 1903 Enterprise (10.0.18362.476) the night light functionality is working, but logging in with a different user gives the same result. The night light is broken again and if you log back in with the previous user the night light is also broken. You can select it and activate it but it doesn't work anymore. Display Settings is still working, but clicking on the Night Light settings results in the closing of the settings screen and an error in the event log.

Naam van toepassing met fout: SystemSettings.exe, versie: 10.0.18362.449, tijdstempel: 0x066bf1a5
Naam van module met fout: SettingsHandlers_Display.dll, versie: 10.0.18362.1, tijdstempel: 0xac1c53a8
Uitzonderingscode: 0x80000003
Foutmarge: 0x000000000001e0c4
Id van proces met fout: 0x2490
Starttijd van toepassing met fout: 0x01d5a8f38759559c
Pad naar toepassing met fout: C:\Windows\ImmersiveControlPanel\SystemSettings.exe
Pad naar module met fout: C:\Windows\System32\SettingsHandlers_Display.dll
Rapport-id: 2da54e96-c90f-4d0b-93ff-09abbaaab155
Volledige pakketnaam met fout: windows.immersivecontrolpanel_10.0.2.1000_neutral_neutral_cw5n1h2txyewy
Relatieve toepassings-id van pakket met fout: microsoft.windows.immersivecontrolpanel

With Windows 10 1803 Enterprise (10.0.17134.1130)  it works fine and keeps on working with every user that uses the system. 

After upgrading from Windows 10 1803 to Windows 10 1909 the night light is no longer working and I cannot select the night light settings anymore. It results in the above error. If I revert the operating system back to Windows 10 1803 everything works as expected again. Night Light is fine, choosing the Night Light settings is fine. Display Settings is fine.

No driver was updated during the upgrade so I am guessing this is a Windows 10 1909 bug but until anyone else can reproduce the problem on their HP EliteBook with 1909 I can't be certain.

extra link: https://answers.microsoft.com/en-us/windows/forum/windows_10-other_settings/night-light-brakes-displ...