Thank you for taking the time to visit the Community to post your issue, although I apologize that you haven't received a response.
We will need a bit more information to be able to assist. Please take a moment to review the information here and post back with the year and version of Quicken you are currently running.
May I also if these reminders are linked to online bills? Do you use any bill pay method in this file?
Do you see this issue on one specific account or every account?
The more information you can provide regarding this issue will help the Community to better understand and assist.
Thank you,
-Quicken Tyka
I would next recommend running the Validate & Repair tool on the data file from the File menu > File Operations > Validate & Repair option.
In the Validate File window that opens, click the top box to "validate file" and then click OK.
When the validation completes, a data log will open in Notepad, please let us know if any errors or issues are found/repaired, specifically regarding reminders.
Please let me know what you find!