You can easily add and remove reminders in MS Outlook; it deals with e-mail messages, contacts and calendar items etc.
Note: If Open Recurring Item dialog box appears, click on Open this occurrence and click Ok.
Note: Default reminder time for all day events is 18 hours in advance. Although you can't modify default reminder setting of all day events that you create, you can change reminder time on each appointment
The most easiest one among them is cleanreminder switch: If your Outlook reminder get corrupt and pop up again and again at your screen then close Outlook and reopen it in cleanreminder switch. To do this, press windows key + R to open Run dialog. Type Outlook.exe /cleanreminders or Outlook /cleanreminders in the Open field and after that press Ok
Note: Make sure there should be a space Outlook and slash; using outlook.exe is optional only program also works.
A few people will need to use full path to outlook.exe. Click browse and look under C:\Program Files\Microsoft Office\
At some instant cleanreminders switch doesn't helps in resolving issue at that time look for appointment that is associated with reminder and delete it. If you won't found them then go for an MFCMAPI to delete reminder.
When you delete reminders from POP3 accounts or PST files right click on pst name that contain corrupt reminder. If you can't find corrupt reminder, delete the entire reminder folder. Outlook will rebuild folder and good reminders.