Azure App Configuration
An Azure service that provides hosted, universal storage for Azure app configurations.
dev.azure.com/vscode having auth issues (federated login)
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mb21
0
Reputation points
I can login to my Microsoft account, but whenever I then navigate to https://dev.azure.com/vscode, I need to login again, and then I get redirected to https://login.microsoftonline.com/common/federation/oauth2msa where it says:
AADSTS50020: User account '[myemail]' from identity provider 'live.com' does not exist in tenant 'Microsoft' and cannot access the application '499b84ac-1321-427f-aa17-267ca6975798'(Azure DevOps) 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.
Is there some problem with my account or is this happening for everyone?
I really need to push an update to https://marketplace.visualstudio.com/items?itemName=mastro.mastro-vscode-extension and my personal access token is expired :-(
Azure App Configuration
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Pravallika KV 3,880 Reputation points Microsoft External Staff Moderator2025-10-23T09:27:06.6466667+00:00 Hi mb21,
The error usually occurs if you are making use of Personal Microsoft account to access resources in tenant.
In your case, you are trying to access application '499b84ac-1321-427f-aa17-267ca6975798' i.e., Azure Devops organization but as the user account is not part of the tenant the error is triggered.
To resolve the error,
- Sign in using
Azure AD work/school accountwhich is already part of the organization. - Otherwise, if you still want to sign in using personal Microsoft account, you need to add the account as external/guest user in the tenant and assign the appropriate role to the user to access the resources in the Tenant.
Refer the doc https://xtls-v4.hkg1.meaqua.org/en-us/entra/external-id/b2b-quickstart-add-guest-users-portal to invite the user as guest.
- Sign in using
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mb21 0 Reputation points
2025-10-23T10:33:18.5733333+00:00 @Pravallika KV the application in question is https://dev.azure.com/vscode (which is run by Microsoft), so I cannot "add the account as external/guest". Also, I'm not part of a business or school. And besides, this used to work just fine.
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Pravallika KV 3,880 Reputation points Microsoft External Staff Moderator
2025-10-23T10:37:53.0133333+00:00 -
mb21 0 Reputation points
2025-10-23T10:59:42.98+00:00 I'm sorry, but this whole thing https://dev.azure.com/vscode (tenant and app) is managed by Microsoft, not me. It may be a different part of the org, but it's still Microsoft.
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Pravallika KV 3,880 Reputation points Microsoft External Staff Moderator
2025-10-23T17:23:12.9333333+00:00 mb21, I will check internally and get back to you shortly.
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mb21 0 Reputation points
2025-10-26T07:11:54.34+00:00 Okay, apparently this is a known issue: https://github.com/microsoft/vscode-discussions/discussions/2884
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