diff --git a/me-rustdeskhost-installer.sh b/me-rustdeskhost-installer.sh
index e3ea678..f0754b6 100644
--- a/me-rustdeskhost-installer.sh
+++ b/me-rustdeskhost-installer.sh
@@ -79,7 +79,7 @@ for vm in "${SELECTED[@]}"; do
     qm guest exec $VMID -- powershell -Command "New-Item -ItemType Directory -Force -Path 'C:\TMP'" >/dev/null 2>&1
 
     echo -e "${INDENT} -> Lade Batch-Script herunter..."
-    qm guest exec $VMID -- powershell -Command "\$ProgressPreference = 'SilentlyContinue'; Invoke-WebRequest -Uri '$SCRIPT_URL' -OutFile 'C:\TMP\install-rustdesk.bat' -UseBasicParsing" >/dev/null 2>&1
+    qm guest exec $VMID -- powershell -Command "[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; $ProgressPreference = 'SilentlyContinue'; \$ProgressPreference = 'SilentlyContinue'; Invoke-WebRequest -Uri '$SCRIPT_URL' -OutFile 'C:\TMP\install-rustdesk.bat' -UseBasicParsing" >/dev/null 2>&1
 
     echo -e "${INDENT} -> Starte lokale Installation in der VM..."
     # Ohne >/dev/null, damit wir den Output des CMD-Fensters in Proxmox sehen können