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NOTE: The procedures in this article only apply if you have installed Outlook with the Corporate or Workgroup option. With this option, you can use Messaging Application Programming Interface (MAPI) services. To determine your installation type, click About Microsoft Outlook on the Help menu. If you have the Corporate or Workgroup installation, you see "Corporate or Workgroup".
When you attempt to update a task in Microsoft Outlook 98, you may receive the following error message:
Could not complete the operation. One or more parameter values are not valid.
The Microsoft Exchange Server mailbox, or the Tasks folder on the server, is corrupted.
Choose one of the following methods to correct this problem. The methods are listed from easiest to most difficult. The first method, if successful, does not result in data loss. The second method results in the loss of task data. Method 3 may result in significant loss of data.
Method 2Start Microsoft Outlook with the /cleanviews command line switch:
Method 4Quit Outlook and have your server administrator remove the mailbox on the server, and then create a new mailbox.
NOTE: Do not import any of the previous data to the new mailbox. Doing so could import the damaged information.
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