diff --git a/login/Error.aspx.vb b/login/Error.aspx.vb
index e93d5ca..7d8915d 100644
--- a/login/Error.aspx.vb
+++ b/login/Error.aspx.vb
@@ -1,5 +1,9 @@
 
 Partial Class login_Default
     Inherits System.Web.UI.Page
-
+    Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
+        If String.Equals(VERAG_PROG_ALLGEMEIN.cCryptography3.Decrypt(Request.QueryString("P1")), "") = False Then
+            FormsAuthentication.RedirectToLoginPage()
+        End If
+    End Sub
 End Class