diff --git a/src/installer/managed/Microsoft.NET.HostModel/AppHost/HostWriter.cs b/src/installer/managed/Microsoft.NET.HostModel/AppHost/HostWriter.cs
index c0e979dd28d276..1ed401919897eb 100644
--- a/src/installer/managed/Microsoft.NET.HostModel/AppHost/HostWriter.cs
+++ b/src/installer/managed/Microsoft.NET.HostModel/AppHost/HostWriter.cs
@@ -251,6 +251,7 @@ private static void CodeSign(string appHostPath)
                 Arguments = $"-s - \"{appHostPath}\"",
                 FileName = codesign,
                 RedirectStandardError = true,
+                UseShellExecute = false,
             };
 
             using (var p = Process.Start(psi))