@Fluno, Corey H Thanks for posting in our Q&A.
For this issue, "permisson of managed apps-read" means that you can only view things under Apps page in intune portal. However, "Devices\Windows\Device Name\Managed Apps" is under Devices page, so it is suggested to try to set the permission of managed devices to "read". And then check if you can successfully to view Devices\Windows\Device Name\Managed Apps.
Hope it will help.
If the answer is the right solution, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.