Microsoft KB Archive/149391

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XCLN: Exchange Client Very Slow to Start Using TCP/IP
'Article ID: Q149391

Creation Date: 01-APR-1996

Revision Date: 16-JAN-1997' The information in this article applies to:


 * Microsoft Exchange client for Windows 3.x, version 4.0
 * Microsoft Exchange client for Windows NT, version 4.0
 * Microsoft Exchange client for Windows 95, version 4.0

SUMMARY

When you start the Microsoft Exchange client, it may take a long time to bring up the main client window when the RPC Binding Order is configured with TCP/IP at the top of the Binding Order.

MORE INFORMATION

When you use TCP/IP to communicate with the computer running Microsoft Exchange Server, the Microsoft Exchange client will only be successful if one or more of the following conditions are true:

  The name of the Microsoft Exchange Server is in the HOSTS file on the client computer. For example, the entry in the HOSTS file would look like: "127.0.0.1 exchsrvr" The name of the Microsoft Exchange Server is in the DNS Server and the DNS settings are properly configured on both the server and client. The name of the Microsoft Exchange Server is in the WINS database and WINS is properly configured on both the server and client.

If none of the above conditions are true, the Microsoft Exchange client might still be able to connect to the Microsoft Exchange Server if it can use a different protocol. Because TCP/IP is first in the RPC Binding Order, the Microsoft Exchange client will time-out over TCP/IP before it tries to use another protocol. This causes the increased startup time. If none of the above conditions are true and either the client computer has only the TCP/IP protocol installed or the RPC Binding Order has only TCP/IP, the Microsoft Exchange client will not be able to connect to the Microsoft Exchange Server.

For more information on configuring the RPC Binding Order, please refer to the following Microsoft Knowledge Base article:

ID : Q136516 XCLN: Improving Windows Client Startup Times
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KBCategory: kbusage

KBSubcategory: XCLN

Additional reference words: 4.00