Outlook search is arguably one of the most important tools on an email client.When it stops working, it can seriously affect your ability to quickly navigate through your emails.While my other accounts were syncing, one Hotmail email account had stopped syncing. Now under Info, click on Account Settings and open the settings for the affected account.
When you check if it is marked for indexing, you should also try disabling and then re-enabling Outlook.
So, even if you’re using the new Outlook 2016, you will eventually run into some issues.
One of the most common issues that occur with most Outlook clients is the search tool not working as it should.
If your search shows no results, one thing that could be happening is that your Outlook data file is not actually checked off for indexing.
It is important to have the Outlook Search Index working correctly, as it can send the entire email client into a spiral of malfunction.