unable to login to studio

Question

unable to login to studio

Rama Devi Tanneru 0

Selected user account does not exist in tenant 'Microsoft Services' and cannot access the application '88945db0-3c0e-42df-94fa-585d1ad4aa20' in that tenant. The account needs to be added as an external user in the tenant first. Please use a different account.

Siddhesh Desai 4,025 Reputation points Microsoft External Staff Moderator

2026-02-20T23:35:11.4466667+00:00

Hi @Rama Devi Tanneru

Thank you for reaching out to Microsoft Q&A.

The error message “Selected user account does not exist in tenant ‘Microsoft Services’ and cannot access the application” occurs when the user is attempting to sign in to an application that belongs to a different Microsoft Entra ID (Azure AD) tenant than the one where the user account exists. In this case, the application is registered in the Microsoft Services tenant, while the user is signing in with an account that is not present in that tenant (for example, a partner, vendor, or external organizational account). Since the application does not automatically allow external identities, the authentication request is blocked. This is a tenant-bound access restriction and is not related to password issues, browser problems, or device configuration.

Refer below points to resolve this issue or this is the workaround:

Use the correct tenant account If the application is intended only for users within the Microsoft Services tenant, sign in using an account that exists in that tenant (such as a Microsoft-issued account). External or partner accounts will not be able to access the application unless explicitly allowed.

Add the user as an external (guest) user in the tenant If external access is required, the tenant administrator of the Microsoft Services tenant must add the affected user as a Guest user and then assign the appropriate permissions to the application. Once the guest invitation is accepted, the user should be able to access the application.

Verify application sign-in configuration If you are the application owner, confirm whether the application is configured as single-tenant or multi-tenant and ensure that external collaboration settings allow guest access. For Microsoft first‑party applications, this configuration is typically restricted and cannot be changed by external users.
Sridevi Machavarapu 22,700 Reputation points Microsoft External Staff Moderator

2026-03-13T18:00:17.7766667+00:00

Hello Rama Devi Tanneru,

If issue still persists, please share requested details in Private messages tab.

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Sridevi Machavarapu 22,700 Reputation points Microsoft External Staff Moderator

2026-03-13T18:00:17.7766667+00:00

Hello Rama Devi Tanneru,

If issue still persists, please share requested details in Private messages tab.

Answer 1

The error message you are encountering indicates that the user account you are trying to log in with does not exist in the specified tenant ('Microsoft Services'). This typically happens when the account has not been added as an external user in the tenant or if there is a mismatch in the account's identity provider.

To resolve this issue, you can take the following steps:

Add the guest user to your directory: Ensure that the account you are trying to use is added as an external user in the tenant. This can usually be done by an administrator in the Azure portal.
Check the application registration: Make sure that the application you are trying to access is configured to allow users from the correct tenant.
Use the correct sign-in URL: If your application is meant to support multiple tenants, ensure that you are using the appropriate sign-in URL for multitenant applications.

Following these steps should help you gain access to the application.

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unable to login to studio

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