Microsoft Knowledge Base

"Error 645" When Attempting to Connect to MSN
Last reviewed: October 6, 1997
Article ID: Q173644
The information in this article applies to:
  • The Microsoft Network version 2.5

SYMPTOMS

When you attempt to connect to MSN, The Microsoft Network, you may receive the following error message: 

   Error 645

CAUSE

This behavior can occur if Dial-Up Adapter components are damaged or missing.

RESOLUTION

Remove and reinstall the Dial-Up Adapter and Dial-Up Networking. To do so, use the following steps:

  1. Click Start, point to Settings, and then click Control Panel.

  2. Double-click Network.

  3. Click Dial-Up Adapter, and then click Remove.

  4. Click OK.

  5. When you are prompted to restart your computer, click No.

  6. Double-click Add/Remove Programs.

  7. On the Windows Setup tab, click Communications, and then click Details.

  8. Click the Dial-Up Networking check box to clear it.

  9. Click OK until you return to Windows.

  10. Close the Control Panel window.

  11. Restart the computer.

  12. Double-click The Microsoft Network.

  13. When the Connection Manager dialog box opens, click Yes, and then click OK. Follow the instructions on the screen. You may be prompted for your Windows disks or CD-ROM.

  14. When you are prompted to restart the computer, click Yes.

MORE INFORMATION

For more information about manually configuring the Transport Control Protocol/Internet Protocol (TCP/IP), see the following article in the Microsoft Knowledge Base: 

   ARTICLE-ID:  Q172552
   TITLE     :  How to Configure TCP/IP for The Microsoft Network

Additional query words: 2.50
Keywords : msnconnect kbenv kbnetwork
Version : WINDOWS:2.5
Platform : WINDOWS

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.

Last reviewed: October 6, 1997
©1997 Microsoft Corporation. All rights reserved. Legal Notices.