TCP Connections Left Open After Using LDAP Search

• Microsoft Internet Explorer version 4.01 Service Pack 1 for Windows 95
• Microsoft Internet Explorer versions 3.02, 4.01 Service Pack 1 for Windows NT 4.0

SYMPTOMS

When you use either Microsoft Outlook Express or Microsoft Outlook in Internet Only mode, one network connection to a Lightweight Directory Access Protocol (LDAP) version 2.0 server is not closed after you perform a Find People search. This issue results in multiple open connections on the LDAP server.

CAUSE

This issue occurs because the LDAP search component attempts a connection to the LDAP server using the LDAP version 3 protocol. A server using LDAP version 2 responds with a protocol error since it does not support LDAP version 3. The search component then opens another Transmission Control Protocol (TCP) connection to the server and binds to it, but does not close the first connection.

RESOLUTION

A supported fix that corrects this problem is now available from Microsoft, but it has not been fully regression tested and should be applied only to systems experiencing this specific problem. If you are not severely affected by this specific problem, Microsoft recommends that you wait for the next Internet Explorer service pack that contains this fix.

To resolve this problem immediately, 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://www.microsoft.com/support/supportnet/overview/overview.asp

STATUS

Microsoft has confirmed this to be a problem in Internet Explorer 4.0.

Additional query words: ack fin TCP IP 4.00

Keywords : kbnetwork msiew95 msient
Version : WINDOWS:3.02,4.01 Service Pack 1
Platform : WINDOWS
Issue type : kbprb