diff --git a/src/DemaConsulting.AgentControl.Msi/DemaConsulting.AgentControl.Msi.wixproj b/src/DemaConsulting.AgentControl.Msi/DemaConsulting.AgentControl.Msi.wixproj
index 5774af6..7bc00a3 100644
--- a/src/DemaConsulting.AgentControl.Msi/DemaConsulting.AgentControl.Msi.wixproj
+++ b/src/DemaConsulting.AgentControl.Msi/DemaConsulting.AgentControl.Msi.wixproj
@@ -22,7 +22,6 @@
     <SelfContained>true</SelfContained>
     <Platform>x64</Platform>
     <ProductVersion Condition="'$(ProductVersion)' == ''">0.0.0</ProductVersion>
-    <DefineConstants>ProductVersion=$(ProductVersion)</DefineConstants>
     <!-- Distributed installer file name: "AgentControl-{version}.msi" rather than the
          default project-name-derived "DemaConsulting.AgentControl.Msi.msi". MsiPackageVersion
          is deliberately a custom property name (not the well-known "Version"/"ProductVersion"
@@ -33,6 +32,11 @@
          command-line /property:TargetName=, keeps the rename scoped to this project only). -->
     <MsiPackageVersion Condition="'$(MsiPackageVersion)' == ''">$(ProductVersion)</MsiPackageVersion>
     <TargetName>AgentControl-$(MsiPackageVersion)</TargetName>
+    <!-- Exposes both versions to Package.wxs: ProductVersion (numeric-only, ICE24-safe) drives
+         the MSI's actual Package/@Version, while MsiPackageVersion (the full semver, including
+         any pre-release suffix like "-beta.1") drives the separate ARPDISPLAYVERSION property so
+         Add/Remove Programs shows the real release version rather than the ICE24-stripped one. -->
+    <DefineConstants>ProductVersion=$(ProductVersion);MsiPackageVersion=$(MsiPackageVersion)</DefineConstants>
   </PropertyGroup>
 
   <ItemGroup>
@@ -107,7 +111,7 @@
          (an even count, which argv parsing resolves to one literal backslash plus a real,
          unescaped closing quote) so BaseIntermediateOutputPath/BaseOutputPath still end in a
          proper path separator for the SDK's own path concatenation. -->
-    <Exec Command="dotnet publish &quot;$(AgentControlProjectDir)DemaConsulting.AgentControl.csproj&quot; --configuration $(Configuration) --runtime win-x64 --self-contained true --output &quot;$(AgentControlPublishDir.TrimEnd('\'))&quot; -p:BaseIntermediateOutputPath=&quot;$(AgentControlIsolatedObj.TrimEnd('\'))\\&quot; -p:BaseOutputPath=&quot;$(AgentControlIsolatedBin.TrimEnd('\'))\\&quot; /nodeReuse:false" />
+    <Exec Command="dotnet publish &quot;$(AgentControlProjectDir)DemaConsulting.AgentControl.csproj&quot; --configuration $(Configuration) --runtime win-x64 --self-contained true --output &quot;$(AgentControlPublishDir.TrimEnd('\'))&quot; -p:BaseIntermediateOutputPath=&quot;$(AgentControlIsolatedObj.TrimEnd('\'))\\&quot; -p:BaseOutputPath=&quot;$(AgentControlIsolatedBin.TrimEnd('\'))\\&quot; -p:Version=$(MsiPackageVersion) /nodeReuse:false" />
   </Target>
 
   <!-- Note: the isolation mechanism above (dedicated obj/bin/publish folders plus
diff --git a/src/DemaConsulting.AgentControl.Msi/Package.wxs b/src/DemaConsulting.AgentControl.Msi/Package.wxs
index a354be9..ee57eb9 100644
--- a/src/DemaConsulting.AgentControl.Msi/Package.wxs
+++ b/src/DemaConsulting.AgentControl.Msi/Package.wxs
@@ -39,6 +39,15 @@
 
     <MajorUpgrade DowngradeErrorMessage="A newer version of AgentControl is already installed." />
 
+    <!-- Windows Installer requires Package/@Version (ProductVersion) to be strictly numeric
+         "major.minor.build" (ICE24), so any semver pre-release suffix (e.g. "-beta.1") is
+         stripped before it reaches here (see build.yaml's "Compute MSI-safe ProductVersion"
+         step). ARPDISPLAYVERSION is the standard MSI property that overrides only the version
+         string shown in "Add or Remove Programs", independent of the numeric ProductVersion, so
+         users see the real release version (including any pre-release suffix) there instead of
+         the silently-stripped one. -->
+    <Property Id="ARPDISPLAYVERSION" Value="$(MsiPackageVersion)" />
+
     <!-- Embed all generated cabinets directly into the .msi so the installer is a single,
          self-contained file - without this, WiX's default splits the published payload into
          external cab1.cab/cab2.cab/... files that must be shipped alongside the .msi for