Using an outdated version of Outlook.az.We have listed down some of the most common ones. Now you may face issues while using this tool and there can be various reasons for that. The Outlook search tool is very helpful for users to navigate directly to specific information or email. So, here we are to help you with this but first, we discuss why such issues occur frequently. Now the question arises is how to fix Outlook search issues. Handling such huge traffic can be a hectic process and due to this you may face some issues like Mac outlook search not working or Outlook search show no results. It is estimated that Outlook has a huge user base of around 500 million. It is developed by Microsoft corporations and commonly used for managing personal information. Outlook is one of those web apps that are used widely by a huge number of users.