Note: When the index is being rebuilt, your search will not work. You should wait until the index is done rebuilding. The time it will take for the index to be rebuilt depends on the system you are using, the amount of files that need to be indexed, and file size.
When your index has finished rebuilding, you can go ahead and restart your Outlook searches. This should have fixed your Outlook 2016 search problems.
There have been a few updates for Outlook 2016 released since we wrote this article. However, for those of you still having issues, readers have written some great suggestions in the comments below with further things to try if the above solutions aren’t working perfectly. Here are 2 great ones:
Pat suggests you check your computer’s sleep time:
“Change the time-out/sleep-time on your computer to a large number such as 5 hours and it will rebuild the indexing files. Afterward, you can return the sleep time to something normal.
I keep emails for long periods to facilitate searches for old messages and have very large in and sent boxes. Every 6 – 12 months I do massive archiving on my several computers. The original files and the archives are so large with so many messages, that it takes a fair amount of time to re-index. If the computer goes to sleep, it doesn’t complete the indexing. I don’t know how long the indexing it takes, but 20 min is not enough.
I followed the instructions similar to those above; they won’t work if the computer times out before the indexing is complete. To see how to change the sleep time, check on google – it’s simple. In Windows 10 it is : Click the Start menu and select Settings. Click System. Click Power and sleep. Choose your desired Screen and Sleep settings.”
And Rachel has an easy quick fix:
“Go to Control Panel; Programs; Programs and Features; highlight your Office product; click Change at the top; click Quick Repair. Fixes indexing not searching every time.”