Consider the following scenario:

  • You use Microsoft Outlook 2010 to send a nonrecurring meeting request that has a reminder to attendees in a Microsoft Exchange Server 2010 environment.

  • You access the mailbox by using an Exchange ActiveSync (EAS) device and then change the meeting request. You do not change the properties of the meeting such as the date, message body, location, subject, and so on. For example, you change the reminder frequency of the meeting request. (The reminder frequency is┬ánot considered a property of a meeting request.)

  • You synchronize the EAS device that accesses the mailbox in Exchange Server 2010.

  • You use Outlook 2010 to add or to delete attendees for the meeting and then click Send Update.

In this scenario, the updates are sent to all attendees directly. However, you expect that the following message will be displayed:

You have made changes to the list of attendees. Choose one of the following:

  • Send updates only to added or deleted attendees.

  • Send updates to all attendees.


This issue occurs because Exchange Server 2010 incorrectly deals with the null value of certain recurring properties of a meeting request. The null value of these properties is set by EAS. This causes the PidLidChangeHighlight property of meeting requests to be set incorrectly. Therefore, the expected message is not displayed.


To resolve this issue, install the following update rollup:

2661854 Description of Update Rollup 2 for Exchange Server 2010 Service Pack 2


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 PidLidChangeHighlight canonical property, visit the following Microsoft website:

General information about the PidLidChangeHighlight canonical property

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