Delete (outlook) reminders that keep returning
From https://www.slipstick.com/outlook/calendar/delete-reminders-that-keep-returning/ When reminders just won't dismiss, there are several things you can try to get rid of it: Use the Cleanreminders switch . This works most of the time. When cleanreminders doesn't work, look for the appointment the reminder belongs to and delete it. When you can't find the appointment, you need to use MFCMAPI to browse "inside" the message store and delete the reminders. Outlook will then rebuild the list with just the valid reminders. Use Cleanreminders switch The easiest way to try to get rid of corrupt reminders is by closing Outlook and reopening it using the /cleanreminders switch. To do this, press Windows key + R to open the Run dialog. type outlook /cleanreminders in the field and press Ok. Make sure you have a space between Outlook and the slash. Using 'outlook.exe' is optional - just the program name should work. A (very) few people