diff --git a/src/Avalonia.Controls/WindowTransparencyLevel.cs b/src/Avalonia.Controls/WindowTransparencyLevel.cs
index f416b5de91..d463f74a0e 100644
--- a/src/Avalonia.Controls/WindowTransparencyLevel.cs
+++ b/src/Avalonia.Controls/WindowTransparencyLevel.cs
@@ -22,6 +22,11 @@
///
AcrylicBlur,
+ ///
+ /// Force acrylic on some incompatible versions of Windows 10.
+ ///
+ ForceAcrylicBlur,
+
///
/// The window background is based on desktop wallpaper tint with a blur. This will only work on Windows 11
///
diff --git a/src/Windows/Avalonia.Win32/WindowImpl.cs b/src/Windows/Avalonia.Win32/WindowImpl.cs
index fdabf77c3d..1eb0933ac2 100644
--- a/src/Windows/Avalonia.Win32/WindowImpl.cs
+++ b/src/Windows/Avalonia.Win32/WindowImpl.cs
@@ -394,6 +394,11 @@ namespace Avalonia.Win32
}
}
+ if (Win32Platform.WindowsVersion.Major == 10 && effect == BlurEffect.Mica)
+ {
+ effect = BlurEffect.Acrylic;
+ }
+
_blurHost?.SetBlur(effect);
return transparencyLevel;
@@ -426,7 +431,8 @@ namespace Avalonia.Win32
break;
case WindowTransparencyLevel.AcrylicBlur:
- case (WindowTransparencyLevel.AcrylicBlur + 1): // hack-force acrylic.
+ case WindowTransparencyLevel.ForceAcrylicBlur: // hack-force acrylic.
+ case WindowTransparencyLevel.Mica:
accent.AccentState = AccentState.ACCENT_ENABLE_ACRYLIC;
transparencyLevel = WindowTransparencyLevel.AcrylicBlur;
break;