Automatically switches between the dark and light theme of Windows 10 and Windows 11

9.6K stars 303 forks 9.6K watchers C# GNU General Public License v3.0
csharp dark-theme darkmode light-theme lightweight theme-switch wallpaper-changer windows windows-10 windows-11 windows-desktop windowsappsdk winui3 wpf
25 Open Issues Need Help Last updated: Jul 17, 2026

Open Issues Need Help

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good first issue area-UX

Automatically switches between the dark and light theme of Windows 10 and Windows 11

C#
#csharp#dark-theme#darkmode#light-theme#lightweight#theme-switch#wallpaper-changer#windows#windows-10#windows-11#windows-desktop#windowsappsdk#winui3#wpf
good first issue area-windows themes

Automatically switches between the dark and light theme of Windows 10 and Windows 11

C#
#csharp#dark-theme#darkmode#light-theme#lightweight#theme-switch#wallpaper-changer#windows#windows-10#windows-11#windows-desktop#windowsappsdk#winui3#wpf

Automatically switches between the dark and light theme of Windows 10 and Windows 11

C#
#csharp#dark-theme#darkmode#light-theme#lightweight#theme-switch#wallpaper-changer#windows#windows-10#windows-11#windows-desktop#windowsappsdk#winui3#wpf
help wanted hardware related area-features

Automatically switches between the dark and light theme of Windows 10 and Windows 11

C#
#csharp#dark-theme#darkmode#light-theme#lightweight#theme-switch#wallpaper-changer#windows#windows-10#windows-11#windows-desktop#windowsappsdk#winui3#wpf
help wanted no activity

Automatically switches between the dark and light theme of Windows 10 and Windows 11

C#
#csharp#dark-theme#darkmode#light-theme#lightweight#theme-switch#wallpaper-changer#windows#windows-10#windows-11#windows-desktop#windowsappsdk#winui3#wpf

Automatically switches between the dark and light theme of Windows 10 and Windows 11

C#
#csharp#dark-theme#darkmode#light-theme#lightweight#theme-switch#wallpaper-changer#windows#windows-10#windows-11#windows-desktop#windowsappsdk#winui3#wpf

Automatically switches between the dark and light theme of Windows 10 and Windows 11

C#
#csharp#dark-theme#darkmode#light-theme#lightweight#theme-switch#wallpaper-changer#windows#windows-10#windows-11#windows-desktop#windowsappsdk#winui3#wpf
good first issue area-UX

Automatically switches between the dark and light theme of Windows 10 and Windows 11

C#
#csharp#dark-theme#darkmode#light-theme#lightweight#theme-switch#wallpaper-changer#windows#windows-10#windows-11#windows-desktop#windowsappsdk#winui3#wpf

Automatically switches between the dark and light theme of Windows 10 and Windows 11

C#
#csharp#dark-theme#darkmode#light-theme#lightweight#theme-switch#wallpaper-changer#windows#windows-10#windows-11#windows-desktop#windowsappsdk#winui3#wpf
help wanted area-UX

Automatically switches between the dark and light theme of Windows 10 and Windows 11

C#
#csharp#dark-theme#darkmode#light-theme#lightweight#theme-switch#wallpaper-changer#windows#windows-10#windows-11#windows-desktop#windowsappsdk#winui3#wpf
help wanted app compatibility

Automatically switches between the dark and light theme of Windows 10 and Windows 11

C#
#csharp#dark-theme#darkmode#light-theme#lightweight#theme-switch#wallpaper-changer#windows#windows-10#windows-11#windows-desktop#windowsappsdk#winui3#wpf
help wanted can't reproduce

Automatically switches between the dark and light theme of Windows 10 and Windows 11

C#
#csharp#dark-theme#darkmode#light-theme#lightweight#theme-switch#wallpaper-changer#windows#windows-10#windows-11#windows-desktop#windowsappsdk#winui3#wpf
good first issue area-internal

Automatically switches between the dark and light theme of Windows 10 and Windows 11

C#
#csharp#dark-theme#darkmode#light-theme#lightweight#theme-switch#wallpaper-changer#windows#windows-10#windows-11#windows-desktop#windowsappsdk#winui3#wpf

Automatically switches between the dark and light theme of Windows 10 and Windows 11

C#
#csharp#dark-theme#darkmode#light-theme#lightweight#theme-switch#wallpaper-changer#windows#windows-10#windows-11#windows-desktop#windowsappsdk#winui3#wpf
good first issue area-internal

Automatically switches between the dark and light theme of Windows 10 and Windows 11

C#
#csharp#dark-theme#darkmode#light-theme#lightweight#theme-switch#wallpaper-changer#windows#windows-10#windows-11#windows-desktop#windowsappsdk#winui3#wpf

AI Summary: The AutoDarkMode application is not appearing in Windows Search results (classic search bar, PowerToys Run, and CommandPalette), despite individual files being searchable and the program being recognized by other Windows services like Control Panel and Task Manager. The user expects AutoDarkMode to show up as a program in these search interfaces.

Complexity: 3/5
help wanted needs more info

Automatically switches between the dark and light theme of Windows 10 and Windows 11

C#
#csharp#dark-theme#darkmode#light-theme#lightweight#theme-switch#wallpaper-changer#windows#windows-10#windows-11#windows-desktop#windowsappsdk#winui3#wpf
help wanted area-installation

Automatically switches between the dark and light theme of Windows 10 and Windows 11

C#
#csharp#dark-theme#darkmode#light-theme#lightweight#theme-switch#wallpaper-changer#windows#windows-10#windows-11#windows-desktop#windowsappsdk#winui3#wpf

Automatically switches between the dark and light theme of Windows 10 and Windows 11

C#
#csharp#dark-theme#darkmode#light-theme#lightweight#theme-switch#wallpaper-changer#windows#windows-10#windows-11#windows-desktop#windowsappsdk#winui3#wpf
help wanted support area-installation

Automatically switches between the dark and light theme of Windows 10 and Windows 11

C#
#csharp#dark-theme#darkmode#light-theme#lightweight#theme-switch#wallpaper-changer#windows#windows-10#windows-11#windows-desktop#windowsappsdk#winui3#wpf
help wanted needs more info

Automatically switches between the dark and light theme of Windows 10 and Windows 11

C#
#csharp#dark-theme#darkmode#light-theme#lightweight#theme-switch#wallpaper-changer#windows#windows-10#windows-11#windows-desktop#windowsappsdk#winui3#wpf

AI Summary: This is a feature request to automatically change the Windows lock screen image when the system switches between light and dark mode. The user notes that the application's existing theme-switching feature successfully changes the desktop background but not the lock screen, as `.theme` files do not contain lock screen image information. The enhancement would require the application to detect the mode change and apply a corresponding lock screen image.

Complexity: 3/5
good first issue

Automatically switches between the dark and light theme of Windows 10 and Windows 11

C#
#csharp#dark-theme#darkmode#light-theme#lightweight#theme-switch#wallpaper-changer#windows#windows-10#windows-11#windows-desktop#windowsappsdk#winui3#wpf
good first issue internal

Automatically switches between the dark and light theme of Windows 10 and Windows 11

C#
#csharp#dark-theme#darkmode#light-theme#lightweight#theme-switch#wallpaper-changer#windows#windows-10#windows-11#windows-desktop#windowsappsdk#winui3#wpf

AI Summary: Fix a bug in the Windows Auto Dark Mode application where the navigation bar title does not update correctly when navigating between the Personalization settings pages (Background, Accent color, Mouse pointers, Theme). The title should dynamically reflect the currently selected sub-page within Personalization.

Complexity: 3/5
good first issue UX

Automatically switches between the dark and light theme of Windows 10 and Windows 11

C#
#csharp#dark-theme#darkmode#light-theme#lightweight#theme-switch#wallpaper-changer#windows#windows-10#windows-11#windows-desktop#windowsappsdk#winui3#wpf

AI Summary: Debug an issue in a Windows theme-switching application where the sunset time calculation is inaccurate by one hour in Bern, Switzerland. The issue likely stems from incorrect handling of daylight saving time. Debugging will involve analyzing log files and potentially reviewing the application's geolocation and time zone handling code.

Complexity: 4/5
help wanted needs triage

Automatically switches between the dark and light theme of Windows 10 and Windows 11

C#
#csharp#dark-theme#darkmode#light-theme#lightweight#theme-switch#wallpaper-changer#windows#windows-10#windows-11#windows-desktop#windowsappsdk#winui3#wpf

AI Summary: The task is to debug a Windows 10/11 theme-switching application. The application, "Auto Dark Mode", is encountering a "Catastrophic failure (0x8000FFFF)" error specifically within its wallpaper-changing functionality. Debugging requires analyzing the provided stack trace, log files (service.log and config.yaml), and a video demonstrating the issue. The goal is to identify the root cause of the COMException and provide a fix.

Complexity: 4/5
bug help wanted needs triage

Automatically switches between the dark and light theme of Windows 10 and Windows 11

C#
#csharp#dark-theme#darkmode#light-theme#lightweight#theme-switch#wallpaper-changer#windows#windows-10#windows-11#windows-desktop#windowsappsdk#winui3#wpf