XFOR: CDONTS Not Thread-Safe, Crashes Under Stress

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This article was previously published under Q214685

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SYMPTOMS

The Collaboration Data Objects for Windows NT Server (CDONTS) Send Mail function is not thread-safe.

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CDONTS initializes the RTF/HTML converter each time it is used. This initialization is not thread-safe, and is not protected with a critical section. This permits a race condition where one thread can shut down the converter while another thread is still using it, causing memory corruption, asserts, and failures (crashes).

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RESOLUTION

To resolve this problem, obtain the latest service pack for Windows NT 4.0 or the individual software update. For information on obtaining the latest service pack, please go to:

152734 (http://support.microsoft.com/kb/152734/EN-US/ ) how to obtain the latest windows nt 4.0 service pack

For information on obtaining the individual software update, contact Microsoft Product Support Services. 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 (http://support.microsoft.com/default.aspx?scid=fh;en-us;cntactms)

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STATUS

Microsoft has confirmed that this is a problem in Microsoft Exchange Server version 5.5. This problem was first corrected in Windows NT version 4.0 Service Pack 5.

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APPLIES TO

Microsoft Exchange Server 5.5 Standard Edition

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kbbug kbfix KB214685

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Retired KB Content Disclaimer

This article was written about products for which Microsoft no longer offers support. Therefore, this article is offered "as is" and will no longer be updated.

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