diff --git a/Freigabe-Hinzufuegen.ps1 b/Freigabe-Hinzufuegen.ps1
index 1717909..16782c2 100644
--- a/Freigabe-Hinzufuegen.ps1
+++ b/Freigabe-Hinzufuegen.ps1
@@ -341,6 +341,10 @@ try {
         $itemName = Split-Path -Path $Path -Leaf
     }
 
+    # Ungueltige Zeichen fuer Dateinamen entfernen/ersetzen
+    # Verboten in Windows-Dateinamen: \ / : * ? " < > |
+    $itemName = $itemName -replace '[\\/:*?"<>|]', '_'
+
     $shortcutPath = Join-Path $userFolder "$itemName.lnk"
 
     $counter = 1
diff --git a/Install-FreigabeKontextmenue.ps1 b/Install-FreigabeKontextmenue.ps1
index 7438545..5605e04 100644
--- a/Install-FreigabeKontextmenue.ps1
+++ b/Install-FreigabeKontextmenue.ps1
@@ -164,9 +164,9 @@ function Install-ContextMenu {
         }
         
         if ($shellType -eq "Directory\Background\shell") {
-            Set-ItemProperty -Path $freigabeCmd -Name "(Default)" -Value "powershell.exe -ExecutionPolicy Bypass -WindowStyle Hidden -File `"$freigabeScript`" -Path `"%V`""
+            Set-ItemProperty -Path $freigabeCmd -Name "(Default)" -Value "powershell.exe -ExecutionPolicy Bypass -WindowStyle Hidden -File `"$freigabeScript`" -Path `"`"%V`"`""
         } else {
-            Set-ItemProperty -Path $freigabeCmd -Name "(Default)" -Value "powershell.exe -ExecutionPolicy Bypass -WindowStyle Hidden -File `"$freigabeScript`" -Path `"%1`""
+            Set-ItemProperty -Path $freigabeCmd -Name "(Default)" -Value "powershell.exe -ExecutionPolicy Bypass -WindowStyle Hidden -File `"$freigabeScript`" -Path `"`"%1`"`""
         }
         
         if (-not (Test-Path $entfernenKey)) {
@@ -181,9 +181,9 @@ function Install-ContextMenu {
         }
         
         if ($shellType -eq "Directory\Background\shell") {
-            Set-ItemProperty -Path $entfernenCmd -Name "(Default)" -Value "powershell.exe -ExecutionPolicy Bypass -WindowStyle Hidden -File `"$entfernenScript`" -Path `"%V`""
+            Set-ItemProperty -Path $entfernenCmd -Name "(Default)" -Value "powershell.exe -ExecutionPolicy Bypass -WindowStyle Hidden -File `"$entfernenScript`" -Path `"`"%V`"`""
         } else {
-            Set-ItemProperty -Path $entfernenCmd -Name "(Default)" -Value "powershell.exe -ExecutionPolicy Bypass -WindowStyle Hidden -File `"$entfernenScript`" -Path `"%1`""
+            Set-ItemProperty -Path $entfernenCmd -Name "(Default)" -Value "powershell.exe -ExecutionPolicy Bypass -WindowStyle Hidden -File `"$entfernenScript`" -Path `"`"%1`"`""
         }
     }