In this method, you are required to change the email savings settings to fix the Outlook rules not working issue.
Here, click on the Manage Rules & Alerts icon.
Follow the steps mentioned below to fix the Microsoft Outlook rules stopped working problem on Windows 10. Perhaps, using this method, you can decrease the size of Outlook rules and modify them. You need to make sure that you stay below this number. The upper threshold of the size is set at 256KB. The size of the rules is also an important aspect to ascertain the proper functioning of Outlook rules and avoid the Outlook rules not working error.