SSO in Microsoft Edge - issue with hybrid AD Join devices

Question

Hello,

Testing on a Win10 Enterprise 1909 client, domain joined, Azure AD joined (hybrid).
My device is managed by my organization with intunes

But I have an issue with Microsoft Edge compared to my others browsers because Microsoft Edge doesn't provide the hybrid join info to AAD

for instance, I can connect by SSO, IE and Chrome works ! (with win 10 extension)
I can connect to office.com seamlessly without issue with IE and Chrome (the auth is transparent)

However, when using Microsoft Edge to access Office 365, the browser prompts for a username and password and I am block by my CA policy requiering a hybrid join device

What could prevent Microsoft Edge to provide SSO ?
What do I need to verify on my workstation ?
Any clue ?

Thanks for your help!

Answer 1

That scenario is not supported yet,
https://learn.microsoft.com/en-us/deployedge/microsoft-edge-security-identity