DOCUMENT:Q186904 09-AUG-2001 [winnt] TITLE :MPROUTER Access Violation on Invalid RADIUS Response PRODUCT :Microsoft Windows NT PROD/VER::4.0,4.0 SP3 OPER/SYS: KEYWORDS:kbWinNT400sp4fix ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows NT Server version 4.0 SP3 - Microsoft Routing and Remote Access Service Update for Windows NT Server version 4.0 - Microsoft Windows NT Server version 4.0, Terminal Server Edition ------------------------------------------------------------------------------- SYMPTOMS ======== When you use the Routing and Remote Access Service (RRAS) update with Remote Authentication Dial-In User Service (RADIUS) authentication and accounting, the MPROUTER process may encounter an access violation. CAUSE ===== The RADIUS client received a response packet which was less than the minimum (20 byte) length. RESOLUTION ========== To resolve this problem, obtain the latest service pack for Windows NT 4.0 or Windows NT Server 4.0, Terminal Server Edition. For additional information, please see the following article in the Microsoft Knowledge Base: Q152734 How to Obtain the Latest Windows NT 4.0 Service Pack Apply the Routing and Remote Access Hotfix Pack 3.0. For your convenience, the English version of this post-SP3 hotfix has been posted to the following Internet location. However, Microsoft recommends that you install Windows NT 4.0 Service Pack 4 to correct this problem. ftp://ftp.microsoft.com/bussys/winnt/winnt-public/fixes/usa/nt40/hotfixes-postSP3/rras30-fix/ NOTE: The above link is one path; it has been wrapped for readability. For additional information about the Routing and Remote Access Hotfix Pack 3.0, see the following article in the Microsoft Knowledge Base: ARTICLE-ID: Q189594 TITLE : RRAS Upgrade for WinNT Server 4.0 Hotfix Pack 3.0 Release Notes STATUS ====== Microsoft has confirmed this to be a problem in Routing and Remote Access Update for Windows NT version 4.0. This problem was first corrected in Windows NT 4.0 Service Pack 4.0 and Windows NT Server 4.0, Terminal Server Edition Service Pack 4. Additional query words: av crash ====================================================================== Keywords : kbWinNT400sp4fix Technology : kbWinNTsearch kbWinNT400search kbWinNTSsearch kbWinNTS400sp3 kbWinNTS400search kbNTTermServ400 kbNTTermServSearch kbAudDeveloper kbRRASNTSearch kbRRASNT400 Version : :4.0,4.0 SP3 Hardware : ALPHA x86 Issue type : kbbug Solution Type : kbfix ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2001.