Information Store intermittently stops responding and an access violation occurs in EcDSDNFromSz

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The Microsoft Exchange Information Store service (Store.exe) may unexpectedly stop responding (hang), and an access violation (0xc0000005) may occur in the EcDSDNFromSz function.

If the correct symbols are installed on the server, the Dr. Watson log (Drwtsn32.log) or the corresponding User.dmp file may contain a call stack that is similar to the following:
ChildEBP RetAddr 020af500 00462a00 store!EcDSDNFromSz+0x5a 020af548 005721aa store!EcDsRead+0x2e020af574 004f841b store!EcComparePropsEx+0xab 020af5bc 004f7fbf store!TWIR::EcRestrictProperty+0x193 020af5dc 004f7f30 store!TWIR::EcRestrictHier+0xdf 020af5fc 004f8033 store!TWIR::EcRestrictHier+0x4f 020af61c 004f7f30 store!TWIR::EcRestrictHier+0x14a 020af63c 005727c0 store!TWIR::EcRestrictHier+0x4f 020af65c 0043e9cd store!TWIR::EcRestrict+0x46 020af814 0043e365 store!EcDoDeliveryRules+0x451 020af878 005f9364 store!EcDoPrivateFolderRules+0x26a 020afc30 005f6fa5 store!EcDoDeliverMessage+0x1129 020afdb4 004d335e store!EcDeliverMessage+0x106b 020affa0 004df519 store!FStartReceive+0x7f7 020affb8 77f04ef0 store!EcProcessTask+0x11c 020affec 00000000 KERNEL32!BaseThreadStart+0x51 
Additionally, event ID messages that are similar to the following are logged in the application event log:

Event ID: 4097
Source: Dr. Watson
The application, exe\store.dbg, generated an application error. The error occurred on date @ time. The exception generated was c0000005 at address 0042456d (EcDSDNFromSz).

Using the Microsoft Office Outlook 2003 client to modify rules or to import rules into a mailbox that is located on a Microsoft Exchange Server 5.5 computer can cause a server-side rule with a malformed property. The execution of rules in this condition may cause the Microsoft Exchange Information Store service to unexpectedly stop responding.

Software update information

The following update rollup resolves problems that were found in the Exchange 5.5 Information Store since SP4 was released.

The following file is available for download from the Microsoft Download Center:
For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:
119591 How to obtain Microsoft support files from online services
Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.
For more information about this update rollup, click the following article number to view the article in the Microsoft Knowledge Base:
841765 November 2004 Update Rollup for Exchange Server 5.5


This update requires Microsoft Exchange Server 5.5 Service Pack 4 (SP4).

Important If you installed the May 2004 Update Rollup (build 2658.4), you must first uninstall that update rollup before you install this rereleased November 2004 Update Rollup (build 2658.25).

Restart requirement

You do not have to restart your computer after you apply this update.

Installation Information

  1. Download the update from the Microsoft Web site listed earlier in this article.
  2. Locate and then double-click the Exchange5.5-KB841765-x86-enu.EXE file.
  3. When the installation is finished, verify that all the appropriate Exchange-related services have restarted.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
More information
For more information about how software update packages are named, click the following article number to view the article in the Microsoft Knowledge Base:
817903 New naming schema for Exchange Server software update packages
crash Outlook Exchange Interoperability

Article ID: 829418 - Last Review: 11/01/2013 20:57:00 - Revision: 8.0

  • Microsoft Exchange Server 5.5 Standard Edition
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