diff --git a/dotnet/nuget/nuget-package.props b/dotnet/nuget/nuget-package.props
index d619ac6c9f..55e676470c 100644
--- a/dotnet/nuget/nuget-package.props
+++ b/dotnet/nuget/nuget-package.props
@@ -3,21 +3,17 @@
     <!-- Central version prefix - applies to all nuget packages. -->
     <VersionPrefix>0.0.1</VersionPrefix>
     <RCNumber>1</RCNumber>
-    <PackageVersion Condition="'$(IsReleaseCandidate)' == 'true'">$(VersionPrefix)-rc$(RCNumber)</PackageVersion>
-    <PackageVersion Condition="'$(IsReleaseCandidate)' != 'true' AND '$(VersionSuffix)' != ''">$(VersionPrefix)-$(VersionSuffix).260417.1</PackageVersion>
-    <PackageVersion Condition="'$(IsReleaseCandidate)' != 'true' AND '$(VersionSuffix)' == ''">$(VersionPrefix)-preview.260417.1</PackageVersion>
-    <PackageVersion Condition="'$(IsReleased)' == 'true'">$(VersionPrefix)</PackageVersion>
+    <!-- Preview-only branch: all publishable packages ship as 0.0.1-preview.260417.2 regardless of IsReleaseCandidate/VersionSuffix. -->
+    <PackageVersion>$(VersionPrefix)-preview.260417.2</PackageVersion>
     <GitTag>0.0.1</GitTag>
 
     <Configurations>Debug;Release;Publish</Configurations>
-    <!-- IsPackable intentionally NOT set to true here. Packaging is opt-in per project for this branch. -->
-    <!-- The repo default in dotnet/Directory.Build.props keeps IsPackable=false. -->
-    <!-- Only the Foundry preview set explicitly overrides IsPackable=true in their csproj. -->
+    <!-- Override the repo-wide IsPackable=false default from Directory.Build.props. Projects that want to stay non-packable (e.g. Mem0) set IsPackable=false AFTER importing this file. -->
+    <IsPackable>true</IsPackable>
 
     <!-- Package validation. Baseline Version should be the latest version available on NuGet. -->
     <PackageValidationBaselineVersion>1.0.0</PackageValidationBaselineVersion>
-    <!-- Enable validation for GA packages -->
-    <EnablePackageValidation Condition="'$(IsReleased)' == 'true'">true</EnablePackageValidation>
+    <!-- Preview-only branch: package validation disabled entirely. -->
     <!-- Validate assembly attributes only for Publish builds -->
     <NoWarn Condition="'$(Configuration)' != 'Publish'">$(NoWarn);CP0003</NoWarn>
     <!-- Do not validate reference assemblies -->
diff --git a/dotnet/src/Microsoft.Agents.AI.Abstractions/Microsoft.Agents.AI.Abstractions.csproj b/dotnet/src/Microsoft.Agents.AI.Abstractions/Microsoft.Agents.AI.Abstractions.csproj
index 4bf1eb9d54..9f5668c812 100644
--- a/dotnet/src/Microsoft.Agents.AI.Abstractions/Microsoft.Agents.AI.Abstractions.csproj
+++ b/dotnet/src/Microsoft.Agents.AI.Abstractions/Microsoft.Agents.AI.Abstractions.csproj
@@ -3,7 +3,7 @@
   <PropertyGroup>
     <RootNamespace>Microsoft.Agents.AI</RootNamespace>
     <NoWarn>$(NoWarn);MEAI001</NoWarn>
-    <IsReleased>false</IsReleased>
+    <IsReleased>true</IsReleased>
   </PropertyGroup>
 
   <PropertyGroup>
@@ -20,11 +20,6 @@
 
   <Import Project="$(RepoRoot)/dotnet/nuget/nuget-package.props" />
 
-  <!-- Foundry preview release: opt back in to packaging. -->
-  <PropertyGroup>
-    <IsPackable>true</IsPackable>
-  </PropertyGroup>
-
   <PropertyGroup>
     <!-- NuGet Package Settings -->
     <Title>Microsoft Agent Framework Abstractions</Title>
diff --git a/dotnet/src/Microsoft.Agents.AI.Foundry/Microsoft.Agents.AI.Foundry.csproj b/dotnet/src/Microsoft.Agents.AI.Foundry/Microsoft.Agents.AI.Foundry.csproj
index 67c069cb5b..e3c1773941 100644
--- a/dotnet/src/Microsoft.Agents.AI.Foundry/Microsoft.Agents.AI.Foundry.csproj
+++ b/dotnet/src/Microsoft.Agents.AI.Foundry/Microsoft.Agents.AI.Foundry.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <IsReleased>false</IsReleased>
+    <IsReleased>true</IsReleased>
     <InjectSharedThrow>true</InjectSharedThrow>
     <NoWarn>$(NoWarn);OPENAI001;MEAI001;NU1903</NoWarn>
     <CentralPackageTransitivePinningEnabled>false</CentralPackageTransitivePinningEnabled>
@@ -9,11 +9,6 @@
 
   <Import Project="$(RepoRoot)/dotnet/nuget/nuget-package.props" />
 
-  <!-- Foundry preview release: opt back in to packaging. -->
-  <PropertyGroup>
-    <IsPackable>true</IsPackable>
-  </PropertyGroup>
-
   <!-- Disable package validation baseline until the first release under the new package name -->
   <PropertyGroup>
     <PackageValidationBaselineVersion />
diff --git a/dotnet/src/Microsoft.Agents.AI.Workflows.Generators/Microsoft.Agents.AI.Workflows.Generators.csproj b/dotnet/src/Microsoft.Agents.AI.Workflows.Generators/Microsoft.Agents.AI.Workflows.Generators.csproj
index fbaa90cb2c..765de06c7b 100644
--- a/dotnet/src/Microsoft.Agents.AI.Workflows.Generators/Microsoft.Agents.AI.Workflows.Generators.csproj
+++ b/dotnet/src/Microsoft.Agents.AI.Workflows.Generators/Microsoft.Agents.AI.Workflows.Generators.csproj
@@ -29,16 +29,11 @@
   </PropertyGroup>
 
   <PropertyGroup>
-    <IsReleased>false</IsReleased>
+    <IsReleased>true</IsReleased>
   </PropertyGroup>
 
   <Import Project="$(RepoRoot)/dotnet/nuget/nuget-package.props" />
 
-  <!-- Foundry preview release: opt back in to packaging. -->
-  <PropertyGroup>
-    <IsPackable>true</IsPackable>
-  </PropertyGroup>
-
   <PropertyGroup>
     <!-- NuGet Package Settings -->
     <Title>Microsoft Agent Framework Workflows Source Generators</Title>
diff --git a/dotnet/src/Microsoft.Agents.AI.Workflows/Microsoft.Agents.AI.Workflows.csproj b/dotnet/src/Microsoft.Agents.AI.Workflows/Microsoft.Agents.AI.Workflows.csproj
index 51119bbc63..032314c657 100644
--- a/dotnet/src/Microsoft.Agents.AI.Workflows/Microsoft.Agents.AI.Workflows.csproj
+++ b/dotnet/src/Microsoft.Agents.AI.Workflows/Microsoft.Agents.AI.Workflows.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <IsReleased>false</IsReleased>
+    <IsReleased>true</IsReleased>
     <NoWarn>$(NoWarn);MEAI001</NoWarn>
   </PropertyGroup>
 
@@ -14,11 +14,6 @@
 
   <Import Project="$(RepoRoot)/dotnet/nuget/nuget-package.props" />
 
-  <!-- Foundry preview release: opt back in to packaging. -->
-  <PropertyGroup>
-    <IsPackable>true</IsPackable>
-  </PropertyGroup>
-
   <PropertyGroup>
     <!-- NuGet Package Settings -->
     <Title>Microsoft Agent Framework Workflows</Title>
diff --git a/dotnet/src/Microsoft.Agents.AI/Microsoft.Agents.AI.csproj b/dotnet/src/Microsoft.Agents.AI/Microsoft.Agents.AI.csproj
index 428385cadf..10e92850d5 100644
--- a/dotnet/src/Microsoft.Agents.AI/Microsoft.Agents.AI.csproj
+++ b/dotnet/src/Microsoft.Agents.AI/Microsoft.Agents.AI.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <IsReleased>false</IsReleased>
+    <IsReleased>true</IsReleased>
     <NoWarn>$(NoWarn);MEAI001;MAAI001</NoWarn>
   </PropertyGroup>
 
@@ -17,11 +17,6 @@
 
   <Import Project="$(RepoRoot)/dotnet/nuget/nuget-package.props" />
 
-  <!-- Foundry preview release: opt back in to packaging. -->
-  <PropertyGroup>
-    <IsPackable>true</IsPackable>
-  </PropertyGroup>
-
   <ItemGroup>
     <ProjectReference Include="..\Microsoft.Agents.AI.Abstractions\Microsoft.Agents.AI.Abstractions.csproj" />
   </ItemGroup>