From 942f23274fb2b324920667205990aca2078194c1 Mon Sep 17 00:00:00 2001
From: Julien Lebosquain <julien@lebosquain.net>
Date: Wed, 14 Jan 2026 13:57:15 +0100
Subject: [PATCH] Remove EnableUnsafeBinaryFormatterSerialization property
 (#20467)

---
 nukebuild/_build.csproj                          | 2 --
 src/Windows/Avalonia.Win32/Avalonia.Win32.csproj | 2 --
 2 files changed, 4 deletions(-)

diff --git a/nukebuild/_build.csproj b/nukebuild/_build.csproj
index d56ed55a72..c3ee103e73 100644
--- a/nukebuild/_build.csproj
+++ b/nukebuild/_build.csproj
@@ -7,8 +7,6 @@
     <NoWarn>$(NoWarn);CS0649;CA1847</NoWarn>
     <NukeTelemetryVersion>1</NukeTelemetryVersion>
     <TargetFramework>$(AvsCurrentTargetFramework)</TargetFramework>
-    <!-- See https://github.com/nuke-build/nuke/issues/818 -->
-    <EnableUnsafeBinaryFormatterSerialization>true</EnableUnsafeBinaryFormatterSerialization>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/src/Windows/Avalonia.Win32/Avalonia.Win32.csproj b/src/Windows/Avalonia.Win32/Avalonia.Win32.csproj
index c734c474a6..109cba5850 100644
--- a/src/Windows/Avalonia.Win32/Avalonia.Win32.csproj
+++ b/src/Windows/Avalonia.Win32/Avalonia.Win32.csproj
@@ -3,8 +3,6 @@
     <TargetFrameworks>$(AvsCurrentTargetFramework);$(AvsLegacyTargetFrameworks)</TargetFrameworks>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <EnableRuntimeMarshalling>true</EnableRuntimeMarshalling>
-    <!-- We still keep BinaryFormatter for WinForms compatibility. -->
-    <EnableUnsafeBinaryFormatterSerialization>true</EnableUnsafeBinaryFormatterSerialization>
   </PropertyGroup>
   <ItemGroup Condition="!$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)', 'net6.0'))">
     <PackageReference Include="System.Numerics.Vectors" Version="4.6.1" />