DOCUMENT:Q248652 08-MAY-2002 [winnt] TITLE :Dial-Up Networking Cannot Connect to 56-Bit Windows 2000 Server PRODUCT :Microsoft Windows NT PROD/VER:winnt:4.0 OPER/SYS: KEYWORDS:kbnetwork kbWinNT400PreSP7Fix ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows NT Server version 4.0 - Microsoft Windows NT Workstation version 4.0 ------------------------------------------------------------------------------- SYMPTOMS ======== If you use Microsoft Internet Explorer or Windows NT 4.0, you may not be able to connect to a Server Gated Cryptography (SGC) Server for strong encryption using an IP Address or Alias. Scenario: You disable compression on your Windows NT 4.0-based computer, and then call to negotiate 40-bit encryption with a server running Microsoft Windows 2000 Server and accepts calls only with 40-bit and 56-bit encryption. After you dial the server, you are disconnected. RESOLUTION ========== A supported fix is now available from Microsoft, but it is only intended to correct the problem described in this article and should be applied only to systems experiencing this specific problem. To resolve this problem, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information on support costs, please go to the following address on the World Wide Web: http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS NOTE: In special cases, charges that are normally incurred for support calls may be canceled, if a Microsoft Support Professional determines that a specific update will resolve your problem. Normal support costs will apply to additional support questions and issues that do not qualify for the specific update in question. The English-language version of this fix should have the following file attributes or later: Date Time Size File name Platform ------------------------------------------------------------- 01/11/2000 5:35 PM 17.7K RASCCP.dll Alpha 01/11/2000 5:29 PM 10.2K RASCCP.dll i386 To work around this issue, enable Windows NT 4.0 compression. STATUS ====== Microsoft has confirmed this to be a problem in Windows NT 4.0. MORE INFORMATION ================ Cryptography defined: The processes, art, and science of keeping messages and data secure. Cryptography is used to enable and ensure confidentiality, data integrity, authentication (entity and data origin), and nonrepudiation. Server Gated Cryptography (SGC) technology, allows you to conduct 128-bit transactions with banks and financial institutions that support SGC. This problem was originally found in servers with Routing and Remote Access Service (RRAS) Server and Virtual Private Network (VPN), but may exist on other computers, as well. Additional query words: negotiating encryption , compression with 128 bit ====================================================================== Keywords : kbnetwork kbWinNT400PreSP7Fix Component : PPP Technology : kbWinNTsearch kbWinNTWsearch kbWinNTW400 kbWinNTW400search kbWinNT400search kbWinNTSsearch kbWinNTS400search kbWinNTS400 Version : winnt:4.0 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 2002.