Review the document viewing history
In the View pane, you can see which users viewed or downloaded a document and when. You can also download a report.
To see which user viewed a document and when or to download a report:
In the View pane, on the View menu, select Document view history.
In the Document view history dialog box, review the name of the user or users who viewed or downloaded a document, as well as the date and time that they viewed or downloaded the document.
To download a report, click Download report.
When you are finished, in the Document view history dialog box, click OK.