An access violation occurs when a user accesses an Exchange 5.5 public folder by using an ASP page (830592)

CAUSE

This problem may occur if a call is made from the ASP page to a Component Object Model (COM) DLL, and that COM DLL makes multi-threaded calls to the Collaboration Data Objects (CDO) rendering library (Cdohtml.dll). This problem occurs because the CDOHTML!CMimeMap component of the Cdohtml.dll rendering library does not support multi-threaded calls. Therefore, the heap corruption occurs in Internet Information Services.

RESOLUTION

Hotfix information

A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that this article describes. Apply it only to systems that are experiencing this specific problem.

To resolve this problem, contact Microsoft Product Support Services to obtain the hotfix. 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;[LN];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 usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Prerequisites

Microsoft Exchange 5.5 Server Service Pack 4 must be installed before you apply this hotfix.

Restart requirement

You must restart your computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

File information

The English version of this hotfix has the file attributes (or later) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.

Date         Time   Version           Size     File name
--------------------------------------------------------------
29-Nov-2003  07:16  5.5.2657.80       803,600  Cdo.dll          
29-Nov-2003  05:16  5.5.2657.80       537,360  Cdohtml.dll      
15-Nov-2002  01:41  6.5.6582.0         57,344  Htmlsnif.dll     
15-Nov-2002  01:41  6.5.6582.0        225,280  Safehtml.dll