Outlook reminders benefit us a lot by letting us know a scheduled event is about to start. But sometimes, it may be a little annoying to receive pop up of reminders for old events. For instance, if you're out of the office for three days, you might not want
to come back and see reminders for the meetings that took place while you were gone.
Recently, a new feature which allows us to tell Outlook to automatically dismiss reminders for past events has been released
to Version 1810 of Office for Windows for Office 365 subscribers to Monthly Channel. If the new feature is available to you, you can select this option when you don't want to see reminders for events in the past:
1. Select File > Options > Advanced.
2. In the Reminders section, select Automatically dismiss reminders for past events.
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In some occasions, we may encounter the issue that reminders keep returning after being dismissed. See the threads below for discussion about issues of this kind:
Cannot dismiss Outlook 2010 calendar reminders
Reminders
Outlook 2010 Reminder window remains on task bar after
being dismissed
[Symptoms]:
Reminders cannot be successfully dismissed, or they keep returning after being dismissed.
[Cause]:
The reminder folder or the reminder view is corrupted.
[Possible solutions]:
Method 1: Run the Cleanreminders switch
1. Close Outlook.
2. Press Windows key + R to open the Run dialog. Typeoutlook /cleanreminders in the field, press Enter. (Make sure you have a space between Outlook and the slash.)![]()
Method 2: Delete the appointment
If the cleanreminders switch doesn’t work, please look for the appointment associated with the problematic reminder in your calendar and delete it.
Method 3: Use MFCMAPI to delete the reminder folder
1. Download MFCMAPI from github (scroll down and then click Latest release).
2. Exit Outlook, run MFCMAPI.
3. On the Tools menu, click Options, select both of the following check boxes (if they're not already selected), and then click OK:
• Use the MDB_ONLINE flag when calling OpenMsgStore
• Use the MAPI_NO_CACHE flag when calling OpenEntry
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4. Go to Session, Logon, select the profile that you want to change, and then click OK.
5. Double-click the mailbox store that you want to open.
6. Expand Root Container (or Root-Mailbox), right-click theReminders folder, and then click Delete folder.
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Note: Do not delete the individual items inside the Reminders folder. The Reminders folder is just a view of upcoming events on the calendar. If the items inside the folder are deleted, those items will be removed from
the calendar.
7. Run the Outlook.exe /cleanreminders or Outlook.exe /ResetFolders command line. (This step re-creates the Reminders folder and adds any valid entries back in.)
Hope the above information can be helpful. If you need further assistance on this, feel free to post a question with all details to our forum (via clicking “Ask
a question” at the top left of this page), we’ll look further into the issue and try our best to help you.
[Reference]:
Set or remove reminders
You can't successfully dismiss calendar reminders in Outlook
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