Identify Azure login for a particular tenant

Question

Identify Azure login for a particular tenant

Allen Belkin 0

I’m working with an on-line application that requires a specific B2C tenant for authentication. I have found several Azure log-ins but they all go to a different tenant. The developer of the application and the original administrator are no longer available.

How can I find a login that connects to the correct tenant? I know the ID for the tenant. Thanks!

VEMULA SRISAI 9,255 Reputation points Microsoft External Staff Moderator

2026-02-23T23:43:40.22+00:00
Hello Allen Belkin,

There isn’t a separate or special “Azure login” that belongs to a tenant by itself. To access a specific Azure AD B2C tenant, you must sign in using a user account that already exists in that tenant.

Since you already know the Tenant ID, you can force authentication to that tenant directly:

Azure Portal (admin access):

https://portal.azure.com/{TenantID}

or

https://portal.azure.com/{tenant-name}.onmicrosoft.com

Authentication endpoint (B2C scenarios):

https://login.microsoftonline.com/{TenantID}/v2.0

or (commonly used by B2C apps):

https://{tenant-name}.b2clogin.com

If all available logins redirect you to a different tenant, that typically means you don’t currently have a user or admin account in the required B2C tenant.

If the original developer and administrator are no longer available and no Global Administrator account remains in the B2C tenant, access cannot be recovered by self‑service. In that case, the only supported option is to contact Microsoft Support and request tenant access recovery. Microsoft will validate ownership (for example, domain or billing proof) and help reassign a Global Administrator for the tenant.

Hope this clarifies the situation. Let me know if you need help with the support request or next steps.
Allen Belkin 0 Reputation points

2026-02-24T15:35:28.25+00:00

Thanks, Vemula, I appreciate your help. I tried your suggestions but none of them worked.

For the Azure Portal (admin access) code, I get:

Sign-in failed Error code: invalid_grant Error message: invalid_grant: Error(s): 90072 - Timestamp: 2026-02-24 02:51:33Z - Description: AADSTS90072: User account '{EUII Hidden}' from identity provider 'https://sts.windows.net/e5aef9e2-dbff-40db-a209-726fa9abd662/' does not exist in tenant '{tenant-name}' and cannot access the application 'c44b4083-3bb0-49c1-b47d-974e53cbdf3c'(Azure Portal) 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 Trace ID: d25a50dd-1cb4-455e-80d2-d686d85c4b01 Correlation ID: 019c8d8e-f735-7637-a9f5-681293dccde0 Timestamp: 2026-02-24 02:51:33Z - Correlation ID: 019c8d8e-f735-7637-a9f5-681293dccde0 - Trace ID: d25a50dd-1cb4-455e-80d2-d686d85c4b01

For the Authentication endpoint (B2C scenario), using the tenant-name, I get:

The resource you are looking for has been removed, had its name changed, or is temporarily unavailable.

Using the tenant-id, I get

No webpage was found for the web address https://login.microsoftonline.com/{TenantID}/v2.0

In all cases, I substituted the correct tenant-name or tenantId for the placeholders. Unless you have other suggestions, I’ll try requesting tenant access recovery from Microsoft.

1 answer

Your answer

VEMULA SRISAI 9,255 Reputation points Microsoft External Staff Moderator

2026-02-23T23:43:40.22+00:00

Hello Allen Belkin,

There isn’t a separate or special “Azure login” that belongs to a tenant by itself. To access a specific Azure AD B2C tenant, you must sign in using a user account that already exists in that tenant.

Since you already know the Tenant ID, you can force authentication to that tenant directly:

Azure Portal (admin access):

https://portal.azure.com/{TenantID}

or

https://portal.azure.com/{tenant-name}.onmicrosoft.com

Authentication endpoint (B2C scenarios):

https://login.microsoftonline.com/{TenantID}/v2.0

or (commonly used by B2C apps):

https://{tenant-name}.b2clogin.com

If all available logins redirect you to a different tenant, that typically means you don’t currently have a user or admin account in the required B2C tenant.

If the original developer and administrator are no longer available and no Global Administrator account remains in the B2C tenant, access cannot be recovered by self‑service. In that case, the only supported option is to contact Microsoft Support and request tenant access recovery. Microsoft will validate ownership (for example, domain or billing proof) and help reassign a Global Administrator for the tenant.

Hope this clarifies the situation. Let me know if you need help with the support request or next steps.
Allen Belkin 0 Reputation points

2026-02-24T15:35:28.25+00:00

Thanks, Vemula, I appreciate your help. I tried your suggestions but none of them worked.

For the Azure Portal (admin access) code, I get:

Sign-in failed Error code: invalid_grant Error message: invalid_grant: Error(s): 90072 - Timestamp: 2026-02-24 02:51:33Z - Description: AADSTS90072: User account '{EUII Hidden}' from identity provider 'https://sts.windows.net/e5aef9e2-dbff-40db-a209-726fa9abd662/' does not exist in tenant '{tenant-name}' and cannot access the application 'c44b4083-3bb0-49c1-b47d-974e53cbdf3c'(Azure Portal) 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 Trace ID: d25a50dd-1cb4-455e-80d2-d686d85c4b01 Correlation ID: 019c8d8e-f735-7637-a9f5-681293dccde0 Timestamp: 2026-02-24 02:51:33Z - Correlation ID: 019c8d8e-f735-7637-a9f5-681293dccde0 - Trace ID: d25a50dd-1cb4-455e-80d2-d686d85c4b01

For the Authentication endpoint (B2C scenario), using the tenant-name, I get:

The resource you are looking for has been removed, had its name changed, or is temporarily unavailable.

Using the tenant-id, I get

No webpage was found for the web address https://login.microsoftonline.com/{TenantID}/v2.0

In all cases, I substituted the correct tenant-name or tenantId for the placeholders. Unless you have other suggestions, I’ll try requesting tenant access recovery from Microsoft.

Answer 1

To find the correct Azure login for a specific B2C tenant, you can use the tenant ID you already have. Here are the steps you can follow:

Use the Azure Portal: Sign in to the Azure portal using an account that has access to the tenant.
Access Microsoft Entra ID: Once logged in, search for Microsoft Entra ID in the portal.
Locate Tenant Information: In the Microsoft Entra Overview page, you should be able to see the tenant ID and other relevant information in the Basic information section.
Use the Tenant ID for Authentication: When authenticating users or applications, you can direct the browser to https://login.microsoftonline.com/{tenant}/v2.0, replacing {tenant} with your tenant ID. This will ensure that the authentication is directed to the correct tenant.

If you need to programmatically find the tenant ID or perform other operations, you can use the Azure CLI or Microsoft 365 CLI as mentioned in the context.

References:

Allen Belkin 0 Reputation points

2026-02-23T19:45:08.76+00:00

Replying to AI content:

That's the whole problem, I don't know what account has access to the tenant I need

Logged in

I only see the tenant I already knew about, not the one I need.

This URL just says the page can't be found. I tried with both the tenant ID and the domain

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Identify Azure login for a particular tenant

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