Not only that, I deleted the calendar event thinking that it would get rid of the reminder, but it didn’t! So the reminder still lives even though there is no event for it to go with! Strange! Finally, I figured out how to remove the reminder from a forum post and it’s pretty crazy what you have to do to delete the Outlook reminder.

Delete Outlook Reminder

Step 1: Download and install MFCMAPI (Microsoft Exchange Server MAPI Editor) from Stephen Griffin’s website. Unfortunately, it is no longer available from Microsoft. Step 2: Open the program and then click on Session from the top menu and choose Logon and Display Store Table.

Step 3: Choose Outlook in the dialog that says Choose Profile. Click OK.

Step 4: Now double-click on the profile that says “Mailbox ““ Your Name”

Step 5: A new window will pop up. Expand Root ““ Mailbox and then find Reminders. If it’s not directly under the Root, it may be under Finder. Then right-click on it and choose Open Contents Table.

Step 6: Now find the reminder that you are not able to delete and delete it here. You should be able to identify the reminder by the From, To and Subject fields.

Step 7: If, for some reason you are not able to find the undeletable reminder here, you can simply delete the entire Reminders folder under the Root. The Reminders folder will be re-created again when Outlook starts. Note that if you delete the Reminders folder, do NOT select “Hard Deletion” when the alert window pops up. That’s it! Now the reminder will no longer show up in Outlook and you won’t keep getting those annoying popups saying you missed the appointment! Enjoy!

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