Microsoft Outlook search feature is a very convenient option. You can simply write a certain highlighting detail of your email and press enter. The related emails will appear but sometimes you find, Outlook web search not working. There are some troubleshooting ways you can go through to fix the problem. First, restart the application. Check if there are any update available and update the browser and application. You can also use the in built Windows troubleshooting program. See, if there are any damaged files and repair them. If this doesn’t work, create a new profile and login through that.