Microsoft KB Archive/172805

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Access Violations in Rasphone.exe When Attempting a RAS Connection

Article ID: 172805

Article Last Modified on 10/31/2006


  • Microsoft Windows NT Server 4.0 Standard Edition
  • Microsoft Routing and Remote Access Service Update for Windows NT Server 4.0

This article was previously published under Q172805


A computer running Windows NT Server 4.0 and Routing and Remote Access Service (RRAS) may fail when starting Rasphone.exe. The following error message appears:

An application error has occurred
and an application log is being generated.
Exception: access violation (0xC0000005, Address 0x0100342c)

In addition, if Drwtsn32.exe is set up to create a Drwtsn32.log, the following text will appear in the log:

Application exception occurred:
App: exe\rasphone.dbg (pid=169)
When: 8/15/1997 @ 9:10:9.725
Exception number: c0000005 (access violation)

NOTE: The address and PID you have may differ from those in the example.


The GetCallbackList function checks the registry for keys named Callback. It then reads the callback device name, callback port, and callback number from that key. If the key is not in the proper format, Rasphone.exe may fail with an access violation.


WARNING: Using Registry Editor incorrectly can cause serious, system-wide problems that may require you to reinstall Windows NT to correct them. Microsoft cannot guarantee that any problems resulting from the use of Registry Editor can be solved. Use this tool at your own risk.

  1. Start Registry Editor and locate the following Registry subkey in the HKEY_CURRENT_USER subtree:

          \Software\Microsoft\RAS Phonebook\Callback
  2. Remove any keys that are not in the form of DEVICE_NAME (PORT).

Keywords: kberrmsg kbprb KB172805