AADSTS50020 Error when signing in with multiple work accounts

Question

I have a windows 11 computer that is signed in with an Azure AD account. I have also logged into Microsoft Edge with the same account.

I am attempting to setup a second profile within Microsoft Edge. This second account is also an Azure AD (work) account.

When I attempt to sign in with the second account, I receive the following error.

AADSTS50020: UserAccount 'second account' from identity provider 'https://sts.windows.net/guid' does not exist in tenant 'first account tenant' and cannot access the application 'guid'(Microsoft Edge) in that tenant. The account needs to be added as an external user in the tenant first. Sign out and sign in again with a different Azure Active Directory user account.

I don't understand why I need to add an external user or grant any permissions to the second account. As I understand, the second account that is logged into Microsoft Edge would be completely separate, and the 2 tenants shouldn't need to know about the existence of the other.

So is this just an unsupported scenario with Microsoft Edge? The ability to setup two profiles with Azure AD (work) that are separate tenants/organisations?

Thanks

Answer 1

Hi @Thomas Adams

I found a similar issue and I think the answer in it can explain the situation:

Currently on Edge, you can only sign in with one MSA and one AAD account.

You're trying to add a second AAD account when you already have one signed in, that's the issue. 

---

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.

Regards,

Yu Zhou