Microsoft KB Archive/268993

= SMTP Access Violation Occurs During Shutdown in I/O Completion Routine =

Article ID: 268993

Article Last Modified on 10/6/2005

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APPLIES TO


 * Microsoft Commercial Internet System 2.0

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This article was previously published under Q268993



SYMPTOMS
An Access Violation error message may occur in Inetinfo. This may be due to a failure to access an Asynchronous SMTP service I/O operation because it appears to have been previously freed. As a result, the Access Violation error message occurs and DrWtsn32 reports this.



CAUSE
The asynchronous I/O operation cannot be referenced because it is no longer valid. This appears to be the result of a synchronization issue that occurs during the process of service shutdown.



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 Commercial Internet System 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:

  Date      Time      Version       Size    File name     Platform 07/20/2000 11:37a  5.5.1877.53   533,776 Smtpsvc.dll   x86 This hotfix is included with the MCIS Smtpsvc hotfix. For additional information on the MCIS Smtpsvc hotfix, click the article number below to view the article in the Microsoft Knowledge Base:

264891 SMTP Queue Backup Occurs Due to Delivery Threads Attempting to Connect to Unavailable Hosts



STATUS
Microsoft has confirmed that this is a problem in Commercial Internet System 2.0.



MORE INFORMATION
The SMTPSvc now validates this reference. If it is determined to be invalid, the following event is logged through regtrace:

InternetCompletion failed with bad pCC pointer %x

Keywords: kbbug kbfix kbqfe kbhotfixserver KB268993

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