MICROSOFT OUTLOOK SEARCH NOT WORKING
Open outlook and click on File (top-left corner) to reveal a drop-down menu. Click on Options and then on Add-ins. From the Manage List present on your screen, select COM add-ins, and then click on Go. You can remove the add-ins you do not wish to include by un-ticking the box. Once you are done, restart Outlook. This method can help fix Microsoft Outlook search not working. You can turn the add-ins back on at any time by going to the same option as you have now.
For more details: How to fix Outlook not Working