reformatting will not help. the only sledgehammer method that will fix it is
to delete the mailbox. If using /cleanreminders doesn't work (use it every
time you restart outlook, especially after a reboot), I'd try to delete it
using outlookspy.

--
Diane Poremsky [MVP - Outlook]
Outlook Tips: http://www.outlook-tips.net/
Outlook & Exchange Solutions Center: http://www.slipstick.com

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"RudyCardenas" wrote in message
...
One of my clients has a problem with a reminder for which there is no
longer
a corresponding appointment. When he tries to dismiss it Outlook generates
an
error message stating The appointment cannot be opened. Recurrence
information coould not be found.

I ran Outlook commandline switches cleanreminders and cleanfreebusy with
negative results.

What, short of wiping the machine clean, can I do to resolve this
annoyying
issue?