Hello Simon Mair,
Thanks for posting your question in the Microsoft Q&A forum
If you notice that some applications installed on your devices do not appear in the Enterprise Applications report, it is likely because:
- Those apps are not registered or integrated as enterprise applications in your Azure AD tenant.
- Some apps may be hidden from users if the app visibility is set to "No," meaning they won't show up in portals or reports unless explicitly assigned or queried with specific parameters
- Apps without user assignments might not be listed in certain filtered reports.
- Some apps might be registered in other tenants or are personal apps not managed by your Azure AD tenant
Please don't forget to close up the thread here by upvoting and accept it as an answer if it is helpful