Imports System.IO
 
         'Dim objSW As New StreamWriter(Server.MapPath("user/user_login.txt"), 
         ' True)
         'objSW.Write(Request.ServerVariables("Remote_addr"))
         'objSW.Write(";")
         'objSW.Write(cookieBenutzername)
         'objSW.Write(";")
         'objSW.Write(CookieIdKundenText)
         'objSW.Write(";")
         'objSW.WriteLine(DateTime.Now)
         'objSW.Close()

[UnauthorizedAccessException: Der Zugriff auf den Pfad _
  D:\vhosts\mustermann.de\httpdocs\user\user_block.txt wurde verweigert.]
   System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath) +2014227
   System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, _
     Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, _
     FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean _
     bFromProxy) +998
   System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, _
   FileShare share, Int32 bufferSize, FileOptions options) +115
   System.IO.StreamWriter.CreateFile(String path, Boolean append) +58
   System.IO.StreamWriter..ctor(String path, Boolean append, Encoding encoding, _
     Int32 bufferSize) +91
   System.IO.StreamWriter..ctor(String path, Boolean append) +31
   _Default.Button2_Click(Object sender, EventArgs e) +433
   System.Web.UI.WebControls.Button.OnClick(EventArgs e) +105
   System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) _
     +107
   System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePo_
   stBackEvent(String eventArgument) +7
   System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, _
   String eventArgument) +11
   System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +33
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, _
     Boolean includeStagesAfterAsyncPoint) +5102