Problem: Created Search service application and configured Content Sources for crawl. Started the Full crawl and it was completed. Created Enterprise search site and able to see the search results, but when I searched for People search they were no results
Resolution:
Here are some of the steps to verify,
Does the default content access account has read permissions to the web application (Navigate to Central Administration, go to Application Management > Manage Web Application and click on your web application to select it. In the Ribbon, click on User Policy)
Check if you have “SPS3://” protocol is in the Content Sources URL list (Navigate to Central Administration, go to Application Management > Manage Service Application and click on Search Service Application. Go to Crawling > Content Sources and click on Content Sources)
If you need to make changes to any of the above, please run a Full crawl
People Search is working now.