You can run a content indexing job on-demand. Typically, content indexing jobs are run after a successful back up operation according to the schedule defined in the backup plan.
Before You Begin
- 
Each access node that is used to run content indexing jobs must have the Web Server or Index Gateway package installed. 
- 
You must enable content indexing in the Microsoft 365 plan. For more information, see Enable Content Indexing. 
Procedure
- 
From the navigation pane, go to Protect > Office 365. The Office 365 apps page appears. 
- 
Click the app that contains the site for which you want to content index the files or documents. The app page appears. 
- 
On the Sites tab, in the row for the site, click the action button  , and then click Content Indexing. , and then click Content Indexing.
- 
Click Yes.