Issues like Outlook search in the web app problems are quite common, but at the same time, you can fix it by following these steps. Go to settings, and then click on accounts and passwords. Next, select to set up your Outlook account, and select the days of your mail to sync. Set no limits, and all your mail will begin to sync after the next few minutes. If you encounter an Outlook web app search not working issue time and time again, you can reset the settings for networking on your device. Go to the settings menu and select general. Then you will scroll down and click"Reset. Then, select the reset network settings , and after that, enter your password in order to verify the setting.