While working on outlook, there are times when you need to search some old mail from the sent or inbox folder but the search does not yield the required results. The most common cause behind these partial results is the indexing functionality of windows. In Windows 10, you can rebuild the indexing to resolve this issue. Apart from this tweak, you can resolve this problem by following the other tips as explained in step-by-step instructions with screenshots.
Method-1 Rebuild indexing
To rebuild the search index, you can follow the following ways to perform this setting.
Open Outlook, and navigate to File> options. Now, from the right sidebar locate sources and under it click on Indexing Options.
The next indexing option screen, on the top, shows the total number of items that are indexed. Now click on Advanced as shown in the screenshot.
Now from the various index settings, navigate to troubleshooting and click on the button named Rebuild. Once you click it, the indexing processing will begin and take time depending on the volume of files in your system.
Bonus Tip: You can also open the indexing options from the control panel. Just navigate to Control panel>Indexing options.
Method-2 Modify Indexing
Sometimes this method also works. It is a more simple method than the above. Open Microsoft Outlook and open File>options> search>Indexing options. Now click on Modify button.
Now deselect the Microsoft Outlook radio button. Click OK and exit Microsoft outlook. Now restart Outlook and again select Microsoft outlook from the Indexing locations. In most cases, this resolves the indexing issues in searching mails from various folders.
Method-3 Repair pst file
Although the above two solutions will solve your indexing problem, in some cases this issue is related to corruption of the pst file, the database file of outlook. To repair this file, you need to run the scanpst.exe file and follow the instructions. You can file the scanpst.exe file in the installation folder of Microsoft office.