diff --git a/global.json b/global.json
index efcccd3369..8de663287e 100644
--- a/global.json
+++ b/global.json
@@ -1,6 +1,6 @@
 {
   "msbuild-sdks": {
     "MSBuild.Sdk.Extras": "3.0.44",
-    "Uno.Sdk": "5.5.49"
+    "Uno.Sdk": "5.3.96"
   }
 }
diff --git a/src/Directory.Packages.props b/src/Directory.Packages.props
index 0f601ec6a9..9847574b50 100644
--- a/src/Directory.Packages.props
+++ b/src/Directory.Packages.props
@@ -50,7 +50,7 @@
         <PackageVersion Include="Uno.Extensions.Markup.Generators" Version="5.3.12" />
         <PackageVersion Include="Uno.Extensions.Markup.WinUI" Version="5.3.12" />
         <PackageVersion Include="Uno.Roslyn" Version="1.3.0-dev.12" />
-        <PackageVersion Include="Uno.Toolkit" Version="6.3.6" />
+        <PackageVersion Include="Uno.Toolkit" Version="6.1.8" />
         <PackageVersion Include="Uno.UI.Adapter.Microsoft.Extensions.Logging" Version="$(UnoVersion)" />
         <PackageVersion Include="Uno.UI.RuntimeTests.Engine" Version="0.37.0-dev.126" />
         <PackageVersion Include="Uno.WinUI" Version="$(UnoVersion)" />
diff --git a/src/Uno.Extensions.Authentication.MSAL/build/Package.targets b/src/Uno.Extensions.Authentication.MSAL/build/Package.targets
index 90724885af..3957411246 100644
--- a/src/Uno.Extensions.Authentication.MSAL/build/Package.targets
+++ b/src/Uno.Extensions.Authentication.MSAL/build/Package.targets
@@ -7,4 +7,32 @@
 		<DefineConstants>$(DefineConstants);UNO_EXT_MSAL</DefineConstants>
 	</PropertyGroup>
 
+	<!--
+  This is a temporary workaround to avoid error "NETSDK1152: Found multiple publish output files with the same relative path:"
+  for Microsoft.Web.WebView2.Core.dll, with one coming from MsixContent and the other from the Microsoft.Web.Webview2 Nuget package.
+  If both are present, we only keep the one from the NuGet package. See https://github.com/unoplatform/uno/issues/14555.
+-->
+	<Target Condition="$(UnoMsalWebView2Workaround) == 'true'" Name="ResolveWebView2CoreDuplicates1" BeforeTargets="_ComputeResolvedFilesToPublishTypes" AfterTargets="ComputeFilesToPublish">
+		<Message Importance="high" Text ="Applying workaround to resolve Microsoft.Web.WebView2.Core.dll duplication in package (1)" />
+		<ItemGroup>
+			<_WebView2CoreFilesToExclude Include="@(ResolvedFileToPublish)" Condition="'%(Filename)' == 'Microsoft.Web.WebView2.Core'"/>
+		</ItemGroup>
+		<ItemGroup Condition="'@(_WebView2CoreFilesToExclude->Count())' &gt; 1">
+			<_WebView2CoreFilesToExclude Remove="@(_WebView2CoreFilesToExclude)" Condition="$([System.String]::Copy(%(FullPath)).Contains('.nuget'))"/>
+			<ResolvedFileToPublish Remove="@(_WebView2CoreFilesToExclude)" />
+		</ItemGroup>
+		<Message Importance="high" Text ="Removed: @(_WebView2CoreFilesToExclude)" />
+	</Target>
+
+	<Target Condition="$(UnoMsalWebView2Workaround) == 'true'" Name="ResolveWebView2CoreDuplicates2" BeforeTargets="_ComputeAppxPackagePayload" AfterTargets="GetPackagingOutputs">
+		<Message Importance="high" Text ="Applying workaround to resolve Microsoft.Web.WebView2.Core.dll duplication in package (2)" />
+		<ItemGroup >
+			<_WebView2CoreOutputsToExclude Include="@(PackagingOutputs)" Condition="'%(Filename)' == 'Microsoft.Web.WebView2.Core'"/>
+		</ItemGroup>
+		<ItemGroup Condition="'@(_WebView2CoreOutputsToExclude->Count())' &gt; 1">
+			<_WebView2CoreOutputsToExclude Remove="@(_WebView2CoreOutputsToExclude)" Condition="$([System.String]::Copy(%(FullPath)).Contains('.nuget'))"/>
+			<PackagingOutputs Remove="@(_WebView2CoreOutputsToExclude)" />
+		</ItemGroup>
+		<Message Importance="high" Text ="Removed: @(_WebView2CoreOutputsToExclude)" />
+	</Target>
 </Project>