User is not found when trying to assign to VDI in Hostpool

[PCHealer]

Ok, so I have never used VDI's in Azure so this is all new to me.

At work we created a new VDI witihin the session host.

It's staus is available and it says (Assign) however when I try to add a user which is in Azure AD.

I can't find the user... I have no idea why?

Please advise.

[#2]

anyone?

[#3]

Are these users Cloud Only and part of your tenancy (is AVD Azure AD joined or Hybrid)?

Azure Virtual Desktop, doesn't currently support Guest users: https://docs.microsoft.com/en-us/azure/virtual-desktop/faq
External Users, need additional licensing: https://docs.microsoft.com/en-us/azure/virtual-desktop/remote-app-streaming/licensing

[#4]

Apparently becase they had already been assinged another VDI was the issue.