diff --git a/agent-windows/ws/handler.go b/agent-windows/ws/handler.go
index 7f0cd75..50ae2bc 100644
--- a/agent-windows/ws/handler.go
+++ b/agent-windows/ws/handler.go
@@ -235,9 +235,7 @@ func (h *Handler) handleReboot(msg Message) Message {
 // Hilfsfunktionen
 
 func runWithTimeout(command string, timeoutSecs int) (string, error) {
-	// PowerShell verwenden — unterstuetzt winget, UTF-8, moderne Windows-Befehle
-	cmd := exec.Command("powershell", "-NoProfile", "-NonInteractive",
-		"-OutputEncoding", "UTF8", "-Command", command)
+	cmd := exec.Command("powershell", "-NoProfile", "-NonInteractive", "-Command", command)
 	out, err := withTimeout(cmd, time.Duration(timeoutSecs)*time.Second)
 	return out, err
 }
diff --git a/frontend/src/components/WindowsPanel.jsx b/frontend/src/components/WindowsPanel.jsx
index 01796b7..f76678d 100644
--- a/frontend/src/components/WindowsPanel.jsx
+++ b/frontend/src/components/WindowsPanel.jsx
@@ -415,7 +415,7 @@ function WindowsUpdatesTab({ agentId }) {
   const [checking, setChecking] = useState(false)
   const [installing, setInstalling] = useState(false)
 
-  const script = `$s = New-Object -ComObject Microsoft.Update.Session; $r = $s.CreateUpdateSearcher().Search("IsInstalled=0 and Type='Software'"); $r.Updates | ForEach-Object { Write-Output "KB$($_.KBArticleIDs[0]) — $($_.Title)" }; Write-Output "---"; Write-Output "Gesamt: $($r.Updates.Count) Updates ausstehend"`
+  const script = `$s = New-Object -ComObject Microsoft.Update.Session; $r = $s.CreateUpdateSearcher().Search("IsInstalled=0 and Type='Software'"); $r.Updates | ForEach-Object { $kb = if ($_.KBArticleIDs.Count -gt 0) { "KB$($_.KBArticleIDs[0])" } else { "---" }; Write-Output "$kb - $($_.Title)" }; Write-Output ""; Write-Output "Gesamt: $($r.Updates.Count) Updates ausstehend"`
 
   const check = async () => {
     setChecking(true)