As an owner of a file, it generally happens that you want to keep a check who all has viewed your files while sharing through OneDrive for Business. This can be enabled by global admin through the OneDrive admin center.
Step 1. Login with an office 365 Global Admin account.
Step 2. Click on the Admin icon.
Step 3. Click on One Drive.
Step 4. Click on Sharing.
Step 5. Check the Display to owners the names of people who viewed their files.
Please also watch the video if you have any doubt. Video link is given below: