Hello @Jeff Parker
Welcome to Microsoft Q&A Platform, thanks for posting your query here.
Based on the details shares, there could be two things missing:
Please verify that you have assigned the Virtual Machine User role to those users that should access the host pool
Ref document: https://learn.microsoft.com/en-us/azure/virtual-desktop/deploy-azure-ad-joined-vm#assign-user-access-to-host-pools
Please check that you have set the “targetisaadjoined:I:1” rdp property on the host pool as described here:
Ref document: https://learn.microsoft.com/en-us/azure/virtual-desktop/deploy-azure-ad-joined-vm#connect-using-the-windows-desktop-client
Hope this helps.
If you need further help on this, tag me in a comment.
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