Quick Tip: How to list all user profiles in SharePoint Online
To list the user profiles of all SharePoint Online users in your tenant you can follow these steps
Navigate to the User Profiles tab in the SharePoint Administration Center and click Manage User Profiles
In the "Find profiles" text box type i:0#.f|membership
Click the Find button to see the list of all user profiles
Note
- Currently there is no way to list external users (PALs)
- In case you wonder - the "f" in the search string means we are using forms based authentication