Store.exe process may crash when you send an email message that has some attachments in an Exchange Server 2010 SP1 environment

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Symptoms

When you send an email message in a Microsoft Exchange Server 2010 Service Pack 1 (SP1) environment, the Store.exe process might crash if the email message has some attachments. Additionally, the following event is logged in the Application log in this situation:

Log Name:      Application
Source:        MSExchange Common
Date:          Date
Event ID:      4999
Task Category: General
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      Computer
Description:
Watson report about to be sent for process id: Process ID, with parameters: E12N, Build Type, Version Number, store.exe, store.exe, XXXX, c0000005, XXXX, Version Number. ErrorReportingEnabled: True

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Cause

This issue occurs because a property of the email message is set incorrectly.

This causes the Store.exe process crash when it handles the attachments in the email message.

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