You create a new recurring appointment, meeting request, task, or task request in Microsoft Office Outlook 2007. When you set the range of recurrence, the No end date option is always available. You cannot disable the No end date option for appointments, meeting requests, tasks, or task requests.
Note To set the range of recurrence, click Recurrence in the Options group for the appointment, meeting request, task, or task request.
This issue is fixed in the Outlook 2007 post-Service Pack 1 hotfix package that is dated September 24, 2008. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base: