

That’s because you have checked the Do not show this message again in the warning dialog box before.

Note: Take it easy if you don’t view this warning dialog box. Step 3: In the popping up warning dialog box, please click the Yes button. Note: In the Reminder dialog box, it’s OK to remove a specified reminder with highlighting it and clicking the Dismiss button. Step 2: In the popping up Reminder dialog box, click the Dismiss All button. If the Reminders dialog box pops up, skip to the next step. Normally the Reminders dialog box comes out automatically when Microsoft Outlook starts. In Outlook 20, please click the Reminders Window button on the View tab.In Outlook 2007, please click the View > Reminders Window.If you are going to clear all reminders existing in your Microsoft Outlook, please do as following: Step 2: In the popping up Custom dialog box, uncheck the Reminder, and click the OK button. Step 1: Shift to the Mail view, right click the flag icon behind the specified email message whose reminder you will remove, and select the Add Reminder from the right-clicking menu. To remove a reminder for a specified email message in Microsoft Outlook, please do as following: Remove a reminder for a specified email message Step 3: Click the Save & Close button on the Task tab. Step 2: In the Task window, uncheck the Reminder below the Due date box. Step 1: Shift to the Tasks view, and double click to open the specified task whose reminder you will remove. The following steps will guide you to remove a reminder for a specified task in Microsoft Outlook easily. Step 3: Click the Save & Close button to exit the Appointment or Meeting window. Step 2: In the Appointment window, click the button in the Reminder box on the Appointment (or Meeting) tab, and select the None from the drop down menu. Step 1: Shift to the Calendar view, and double click to open an appointment whose reminder you will remove. If you need to clear the reminder for a specified appointment or meeting in Microsoft Outlook, please do as following: If you have feedback for TechNet Subscriber Support, Click here to learn more.Remove a reminder for a specified appointment/meeting Please remember to mark the replies as answers if they helped.
OUTLOOK 2016 REMINDERS WILL NOT DISMISS FREE
If there are any updates, please feel free to post back. (This step re-creates the Reminders folder and adds any valid entries back in.)

If the items inside the folder are deleted, those items will be removed from the calendar.) The Reminders folder is just a view of upcoming events on the calendar. (Note: Do not delete the individual items inside the Reminders folder. Right-click the Reminders folder, and then click Delete folder.Double-click the mailbox store that you want to open.Logon, select the profile that you want to change, and then click OK. Use the MAPI_NO_CACHE flag when calling OpenEntry.Use the MDB_ONLINE flag when calling OpenMsgStore.On the Tools menu, click Options, select both of the following check boxes (if they're not already selected), and then click OK:.Github (scroll down and then click Latest release). Please refer to following steps to re-creates the Reminders folder. If issue continues after all these steps, the Reminders folder or the reminder view may be corrupted.

Have you checked Alfyie's reply above? Does it work for you?
