Can't run published apps on Windows 7

[YueLengM]

Current behavior

Can't run published app on windows 7.
Event viewer shows the following log

Application: Counter.exe
CoreCLR Version: 8.0.1124.51707
.NET Version: 8.0.11
Description: The process was terminated due to an unhandled exception.
Exception Info: System.TypeInitializationException: The type initializer for 'Windows.Globalization.ApplicationLanguages' threw an exception.
 ---> System.DllNotFoundException: Unable to load DLL 'winlangdb.dll' or one of its dependencies: The specified module could not be found.  (0x8007007E)
   at Windows.System.UserProfile.GlobalizationPreferences.NativeMethods.EnsureLanguageProfileExists()
   at Windows.System.UserProfile.GlobalizationPreferences.GetWinUserLanguageList() in /__w/1/s/src/Uno.UWP/System/UserProfile/GlobalizationPreferences.cs:line 33
   at Windows.System.UserProfile.GlobalizationPreferences.get_Languages() in /__w/1/s/src/Uno.UWP/System/UserProfile/GlobalizationPreferences.cs:line 26
   at Windows.Globalization.ApplicationLanguages.ApplyLanguages() in /__w/1/s/src/Uno.UWP/Globalization/ApplicationLanguages.cs:line 157
   at Windows.Globalization.ApplicationLanguages..cctor() in /__w/1/s/src/Uno.UWP/Globalization/ApplicationLanguages.cs:line 63
   --- End of inner exception stack trace ---
   at Windows.Globalization.ApplicationLanguages.ApplyCulture() in /__w/1/s/src/Uno.UWP/Globalization/ApplicationLanguages.cs:line 68
   at Microsoft.UI.Xaml.Application..ctor() in /__w/1/s/src/Uno.UI/UI/Xaml/Application.cs:line 95
   at Counter.App..ctor() in C:\Users\Administrator\source\repos\Uno.Samples-master\reference\Counter\XAML-MVVM\Counter\App.xaml.cs:line 13
   at Counter.Program.<>c.<Main>b__0_0() in C:\Users\Administrator\source\repos\Uno.Samples-master\reference\Counter\XAML-MVVM\Counter\Platforms\Desktop\Program.cs:line 13
   at Uno.UI.Runtime.Skia.Wpf.WpfHost.<StartApp>g__CreateApp|20_0(ApplicationInitializationCallbackParams _)
   at Microsoft.UI.Xaml.Application.StartPartial(ApplicationInitializationCallback callback) in /__w/1/s/src/Uno.UI/UI/Xaml/Application.skia.cs:line 85
   at Microsoft.UI.Xaml.Application.Start(ApplicationInitializationCallback callback) in /__w/1/s/src/Uno.UI/UI/Xaml/Application.cs:line 261
   at Uno.UI.Runtime.Skia.Wpf.WpfHost.StartApp()
   at Uno.UI.Runtime.Skia.Wpf.WpfHost.RunLoop()
   at Uno.UI.Runtime.Skia.SkiaHost.RunCore()
   at Uno.UI.Runtime.Skia.SkiaHost.Run()
   at Counter.Program.Main(String[] args) in C:\Users\Administrator\source\repos\Uno.Samples-master\reference\Counter\XAML-MVVM\Counter\Platforms\Desktop\Program.cs:line 12

Expected behavior

No response

How to reproduce it (as minimally and precisely as possible)

• Download Counter\XAML-MVVM sample
• Publish using the CLI dotnet publish -f net8.0-desktop -r win-x64 -p:SelfContained=true
• Try running it on Windows 7 VM

Workaround

No response

Works on UWP/WinUI

None

Environment

Uno.UI / Uno.UI.WebAssembly / Uno.UI.Skia

NuGet package version(s)

No response

Affected platforms

No response

IDE

Visual Studio 2022

IDE version

No response

Relevant plugins

No response

Anything else we need to know?

No response

[DevTKSS]

@YueLengM
I am not from Team, but participated in a Discussion few Weeks ago, where we asked about wpf for .net Framework compartiblity and the Windows 7 topic you maybe talking about here (?) might have be answered there also from jerome. Could you please lookup that Discussion to check if that already provides a answer to your issue here?
#18764

Honestly I did not fully understand what he meant by the .net 8 can be used for building to windows 7 because his last answer could mean, its just kind of supported, but more likly not longer activly supported, like some "If you are lucky it will run" but thats just my understandment, which might be wrong!

[YueLengM]

The exception log is from .net so I believe that .net 8 should work on Windows 7. But uno is using a dll that is not available on Windows 7.

uno/src/Uno.UWP/System/UserProfile/GlobalizationPreferences.cs

Lines 30 to 51 in d9bc2e2

	#if __SKIA__
	private static string[] GetWinUserLanguageList()
	{
	if (NativeMethods.EnsureLanguageProfileExists() >= 0)
	{
	const char Delimiter = ';';
	if (NativeMethods.GetUserLanguages(Delimiter, out var handle) >= 0)
	{
	var languages = MarshalString.FromAbi(handle).Split(Delimiter);
	MarshalString.DisposeAbi(handle);
	return languages;
	}
	}
	return Array.Empty<string>();
	}
	private static class NativeMethods
	{
	[DllImport("winlangdb.dll", CharSet = CharSet.Unicode, SetLastError = true)]
	public static extern int EnsureLanguageProfileExists();