Activity Reports in the Office 365 admin center
You can easily see how people in your business are using Office 365 services. For example, you can identify who is using a service a lot and reaching quotas, or who may not need an Office 365 license at all.
Reports are available for the last 7 days, 30 days, 90 days, and 180 days. Data won't exist for all reporting periods right away. The reports become available with at least 30 days of data.
How to get to the Reports dashboard
Sign in with your Office 365 admin account at https://portal.office.com/adminportal/home.
In the Office 365 admin center, choose Reports > Usage.
Choose Select a report at the top of the dashboard to select from a list of all available reports. Or, click an at-a-glance activity widget for a service (email, OneDrive, etc) to see more information.
Who can see Office 365 reports
People who have the following permissions:
Office 365 global admins: We recommend that only a few people in your company have this role. It reduces the risk to your business.
Skype for Business admins
Which activity reports are available in the Office 365 admin center
Depending on your Office 365 subscription, here are the available reports.
How to view licensing information
To see how many licenses you have assigned and unassigned, in the Office 365 admin center, go to Billing > Licenses.
To see who is licensed, unlicensed, or guest, go to Users > Active users. Use the Views drop down box to filter your list.
How to view usage information for a specific user
Use the service reports to research how much a specific user is using the service. For example, to find out how much mailbox storage a specific user has consumed, open the Mailbox usage report, and sort the users by name. If you have thousands of users, export the report to Excel so you filter through the list quickly.
You can't generate a report where you enter a user's account and then get a list which services they are using and how much.
Hide user details in the reports
If you want to hide user level information when you're generating your reports, you can quickly make that change in the Office 365 admin center.
Go to the Office 365 admin center > Services & add-ins
Set the toggle to On and Save.
Your user list will look like this:
It'll take a few minutes for these changes to take effect on the reports in the reports dashboard. This setting also applies to the reports API.