Microsoft KB Archive/229674

= XIMS: Chat Service Ends Connection During Long Write =

Article ID: 229674

Article Last Modified on 10/28/2006

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APPLIES TO


 * Microsoft Exchange Server 5.5 Standard Edition

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This article was previously published under Q229674





SYMPTOMS
When a Microsoft Exchange Chat Service computer attempts to write a large amount of data at one time, it may end the connection before all the data is written. This problem typically occurs when the output buffer becomes full and a large amount of data must be sent to the client.



CAUSE
If a connection to the server remains inactive for a long period of time, the server attempts to obtain a reply from the client. If the server does not receive a reply, it tries a second time. If the server still does not receive a reply, it ends the connection.

When the server receives data from the client, it restarts the above process and does not attempt to obtain a reply from the client until the connection has been inactive for a long period of time again. However, the server does not restart the process when it sends data to the client. If it writes a large amount of data at one time, it may end the connection before it has an opportunity to read any data.



RESOLUTION
A supported fix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Apply it only to computers that are experiencing this specific problem. This fix may receive additional testing. Therefore, if you are not severely affected by this problem, Microsoft recommends that you wait for the next Microsoft Exchange Server version 5.5 service pack that contains this hotfix.

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 about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS

NOTE: In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The typical support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

The English version of this fix should have the following file attributes or later:

Component: Chat Service



STATUS
Microsoft has confirmed that this is a problem in Microsoft Exchange Server version 5.5.

Keywords: kbhotfixserver kbqfe kbbug kbfix KB229674

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