Outlook 2007: Cannot Turn Off The Reminder. You May Be Reminded Again.

I use Outlook 2007 to manage email and to schedule appointments or meeting requests. Recently Outlook crashed and required a scan of the PST file before it would operate properly again. All seemed to be working without issue and then one of my recurring meetings continued to alert me that it was time for the meeting which was incorrect. After dismissing the item it would continue to warn of the issue which lead me to believe that the recurring meeting entry had become corrupted. After poking around some more I was able to verify that the meeting was in fact corrupted and read about all sorts of various steps that could be taken to resolve the issue. After attempting many of those steps including the /cleanreminders switch the meeting still existed and was still corrupted. Below I describe the error in more detail and a simple way to resolve a corrupted recurring meeting entry in the Outlook 2007 calendar.

Microsoft Office Outlook 2007 Corrupt Calendar Entry Error:

Microsoft Office Outlook 2007 Error Text: Cannot turn off the reminder. You may be reminded again. Cannot locate recurrence information for this appointment.

There are a couple different errors associated to a corrupt recurring calendar entry in Microsoft Outlook. The above appears to be one of the more common errors however I also noticed the below to Outlook errors that popped up and ended up being related to the same corrupt calendar entry.

Microsoft Office Outlook: Cannot Postpone Reminder Error

Microsoft Office Outlook: Cannot Open This Item Error

Steps Taken To Resolve Corrupt Outlook Calendar Entry:

1. Open Outlook: First launch Outlook 2007 as you normally would do. In a short amount of time the recurring reminder should pop open from the corrupted Calendar entry. When you attempt to click the Snooze button or the Dismiss button one of the errors mentioned above will more than likely display. Make sure to note what entry is corrupted as it will be the item we attempt to remove.
2. Open Outlook Calendar: Click Go in the Outlook top navigation bar and select Calendar from the drop down to display the Outlook Calendar.
3. Change Calendar View: Now modify the view of the Outlook Calendar to display all of the appointments you have configured by clicking on View in the top navigation, hover over Current View in the drop down, and select All Appointments from the pop out menu as shown in the below example image.

   

   Once you select the All Appointments view the center column of Outlook will display a list of every appointment including both past appointments and present appointments.

4. Delete Corrupt Appointment: Now search through the list of all of your Outlook appointments to locate the recurring appointment that continues to pop open reminders. Once located you should highlight the appointment in questions and then click the delete button(red X) to remove the appointment from Outlook. More than likely an error will pop up when you attempt to delete the corrupted appointment such as the one displayed in the below Outlook error message.

   

   Outlook Error Text: The move, copy, or deletion cannot be completed. The items might have been moved or deleted, or you may not have the sufficient permission. If the item was sent as a task request or meeting request, the sender might not receive updates. Cannot locate recurrence information for this appointment.

5. Verify Appointment Removed: After the corrupt appointment or appointments have been removed close Outlook and then restart it to verify that the appointment does not continue to pop open and still provide an error message. You may have to locate numerous appointments to be deleted depending on how many were corrupted initially.

You should now be able to add the appointment or appointments back to Outlook without receiving further errors. If you remove the problem and then have errors continue to pop open at a later date there may be a different issue such as a hard drive that is beginning to fail so make sure to investigate further.