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When a delegate deletes a meeting request for a meeting to which the delegate's manager was invited, the following warning may be displayed:

Deleting this meeting request also removes the meeting from the calendar for <user name>. When deleting a meeting request that hasn't been accepted, the meeting is removed from the calendar.

This warning is shown in the following figure.

If the delegate clicks OK in the warning dialog box, the meeting is deleted from the specified user's calendar. If the delegate clicks Cancel, the meeting request is not deleted. Additionally, the meeting in the specified user's calendar is not deleted.

In this same scenario, if the delegate clicks OK in the warning dialog box, an entry is also logged in the Windows application event log of the delegate's client workstation. The event contains details similar to the following example:

Event Type: Information
Event Source: Outlook
Event Category: None
Event ID: 54
Date:  12/31/2011
Time:  12:31:01 PM
User:  N/A
Computer: UserWorkstation01
An appointment has been deleted from the calendar because the corresponding meeting request was deleted without responding. Subject: Lunch meeting Current User: E14 Delegate1 Flags: 0x00000000 Start Time: 5/24/2011 8:30 PM End Time: 5/24/2011 9:00 PM EntryID: 00000000A1FA38C75CD1D24694AEE9990BEEE734070007171A571E9C7343B46B8E1BA6054B32000000F644AF000007171A571E9C7343B46B8E1BA6054B32000004E8A60C0000.

For more information, see Help and Support Center at

Note This warning only appears when a delegate deletes a meeting invitation that the delegate received on behalf of a manager. If a manager deletes a meeting request from the manager's Inbox, the manager does not receive this warning.

Important After you install the August 28, 2012 hotfix package for Outlook 2010, the tentative meeting remains in the Calendar when you delete the meeting invitation from the Inbox. The tentative copy of the meeting is no longer deleted. This is a change in behavior. The same applies when a delegate deletes a meeting invitation in the manager's Inbox. The warning shown in this section is not displayed.

For more information about the Outlook 2010 hotfix package dated August 28, 2012, click the following article number to view the article in the Microsoft Knowledge Base:

2687351 Description of the Outlook 2010 hotfix package (Outlook-x-none.msp): August 28, 2012

Also in Outlook 2013, the tentative copy of the meeting remains in the Calendar when you delete the meeting invitation from the Inbox.

More Information

If you select the Do not show this message again check box in the warning, the warning message is suppressed the next time that a delegate deletes a meeting request when the corresponding meeting is already marked as tentative on the manager's calendar. However, the meeting is still deleted from the manager's calendar. In this situation, the following registry data suppresses the warning:

Key: HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Outlook\Options\General
Value: 79,

Note The PONT_STRING value may not begin with "79," as there may be other values contained in this string. The PONT_STRING registry value stores multiple comma-separated values. Each indicates a dialog box that you have chosen not to display.

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