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Consider the following scenario:

  • Microsoft Office Outlook is running in online mode in a Microsoft Exchange Server 2010 Service Pack 1 (SP1) environment.

  • A user uses Outlook to open an item that has some attachments in a mailbox.

  • The user deletes an attachment and then saves the item.

In this scenario, the Microsoft Exchange RPC Client Access service crashes. Additionally, the following event is logged in the Application log on the Exchange Server 2010 Client Access server:

Log Name:      Application
Source:        MSExchange Common
Date: Date
Event ID:      4999
Task Category: General
Level:         Error
Keywords:      Classic
User:          N/A
Computer: Computer
Watson report about to be sent for process id: Process ID, with parameters: E12, Build Type, Version Number, M.E.RpcClientAccess.Service, M.E.Data.Storage, M.E.D.S.MemoryPropertyBag.TryGetStoreProperty, M.E.D.Storage.NotInBagPropertyErrorException, XXXX, Version Number.
ErrorReportingEnabled: False

Note When this issue occurs, online Outlook users of the domain are disconnected from the Exchange server.


This issue occurs because the PropertyBag object is cleared after the user deletes the attachment.

Properties are not reloaded, and the NotInBagPropertyErrorException exception is encountered. Therefore, the RPC Client Access service crashes.


To resolve this issue, install the following update rollup package:

2608646 Description of Update Rollup 6 for Exchange Server 2010 Service Pack 1


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 the DeleteAttachment element, visit the following Microsoft website:

General information about the DeleteAttachment elementFor more information about the NotInBagPropertyErrorException class, visit the following Microsoft website:

General information about the NotInBagPropertyErrorException class

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