diff --git a/8x8_Work_Updater.ps1 b/8x8_Work_Updater.ps1
index e127a53..20cbc58 100644
--- a/8x8_Work_Updater.ps1
+++ b/8x8_Work_Updater.ps1
@@ -11,6 +11,11 @@ if (-not ([Security.Principal.WindowsPrincipal][Security.Principal.WindowsIdenti
     exit 1
 }
 
+# Load required .NET assemblies for Windows PowerShell 5.1
+Add-Type -AssemblyName System.Windows.Forms
+Add-Type -AssemblyName System.Drawing
+Add-Type -AssemblyName System.Net.Http
+
 # Use C:\ProgramData\ so standard users have full read/execute access
 $workDir   = "C:\ProgramData\JCT600_8x8Update"
 $flagFile  = Join-Path $workDir "8x8_Update_Proceed.flag"