diff --git a/Directory.Build.props b/Directory.Build.props
index c212909cb0f3..1911068dbe75 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -1,6 +1,8 @@
 <!--  Copyright (c) Files Community. Licensed under the MIT License.  -->
 <Project>
   <PropertyGroup>
+
+    <!--  Generic properties  -->
     <TargetFrameworkVersion>net9.0</TargetFrameworkVersion>
     <TargetWindowsVersion>10.0.26100.0</TargetWindowsVersion>
     <MinimalWindowsVersion>10.0.19041.0</MinimalWindowsVersion>
@@ -8,6 +10,11 @@
     <WindowsTargetFramework>$(TargetFrameworkVersion)-windows$(TargetWindowsVersion)</WindowsTargetFramework>
     <LangVersion>preview</LangVersion>
 
+    <!--  Use Microsoft.Testing.Platform  -->
     <EnableMSTestRunner>true</EnableMSTestRunner>
+
+    <!--  Use strict Roslyn compilation mode  -->
+    <Features>strict</Features>
+
   </PropertyGroup>
 </Project>
diff --git a/src/Files.App.BackgroundTasks/Files.App.BackgroundTasks.csproj b/src/Files.App.BackgroundTasks/Files.App.BackgroundTasks.csproj
index fc0b6e7d6cdb..d3cc7cccad1b 100644
--- a/src/Files.App.BackgroundTasks/Files.App.BackgroundTasks.csproj
+++ b/src/Files.App.BackgroundTasks/Files.App.BackgroundTasks.csproj
@@ -12,6 +12,7 @@
         <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
         <IsAotCompatible>true</IsAotCompatible>
         <DisableRuntimeMarshalling>true</DisableRuntimeMarshalling>
+        <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     </PropertyGroup>
 
     <PropertyGroup>
diff --git a/src/Files.App.CsWin32/Files.App.CsWin32.csproj b/src/Files.App.CsWin32/Files.App.CsWin32.csproj
index d3a5a5198de2..2b9f3ea2b2f3 100644
--- a/src/Files.App.CsWin32/Files.App.CsWin32.csproj
+++ b/src/Files.App.CsWin32/Files.App.CsWin32.csproj
@@ -11,6 +11,7 @@
         <RuntimeIdentifiers>win-x86;win-x64;win-arm64</RuntimeIdentifiers>
         <IsAotCompatible>true</IsAotCompatible>
         <DisableRuntimeMarshalling>true</DisableRuntimeMarshalling>
+        <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     </PropertyGroup>
 
     <ItemGroup>
diff --git a/src/Files.Core.Storage/Files.Core.Storage.csproj b/src/Files.Core.Storage/Files.Core.Storage.csproj
index 50525477bdd9..34f14cf46e42 100644
--- a/src/Files.Core.Storage/Files.Core.Storage.csproj
+++ b/src/Files.Core.Storage/Files.Core.Storage.csproj
@@ -10,6 +10,7 @@
         <RuntimeIdentifiers>win-x86;win-x64;win-arm64</RuntimeIdentifiers>
         <IsAotCompatible>true</IsAotCompatible>
         <DisableRuntimeMarshalling>true</DisableRuntimeMarshalling>
+        <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     </PropertyGroup>
 
     <ItemGroup>
diff --git a/src/Files.Shared/Files.Shared.csproj b/src/Files.Shared/Files.Shared.csproj
index a4941310287b..4d1159f442bf 100644
--- a/src/Files.Shared/Files.Shared.csproj
+++ b/src/Files.Shared/Files.Shared.csproj
@@ -10,6 +10,7 @@
         <RuntimeIdentifiers>win-x86;win-x64;win-arm64</RuntimeIdentifiers>
         <IsAotCompatible>true</IsAotCompatible>
         <DisableRuntimeMarshalling>true</DisableRuntimeMarshalling>
+        <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     </PropertyGroup>
 
     <ItemGroup>