Error AADSTS16000 while trying login on Azure

Question

Error AADSTS16000 while trying login on Azure

Jossein Marmolejo 30

Hello,

I accidentally converted my external user to an internal user, thinking it was the right thing to do, and it's caused me to be unable to log into my Azure account. Because of this, I can't create any support tickets. Can any Microsoft employer help me restore my access please? Thanks in advance.

"errorMessage": "interaction_required: AADSTS16000: User account "{EUII Hidden}" from identity provider "live.com" does not exist in tenant "Directorio predeterminado" and cannot access the application "e6694c91-1590-4e35-9bb7-b865c638b9c1"(Microsoft_Azure_SupportPortalExtension) 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: f5de4b8a-fb61-422f-a56a-f29bff4e8a00 Correlation ID: 9dc03b85-c029-4fbe-bdc9-2c7d83819033 Timestamp: 2025-10-11 20:25:54Z"

VEMULA SRISAI 13,985 Reputation points Microsoft External Staff Moderator

2025-10-19T07:00:53.22+00:00
Hello

Thank you for sharing the details. The error AADSTS16000 indicates that your Microsoft account (from live.com) no longer exists as a guest in the tenant. This usually happens when the external (guest) account is converted to an internal (member) account or removed, which breaks the link to your Microsoft account.

Why this happened

The guest user object was converted to a member user incorrectly.

Or the original guest account was deleted, so your Microsoft account is no longer recognized in the tenant.

Since you cannot access the tenant, a Global Administrator from your organization needs to take action:

Option 1: Re-invite your Microsoft account

A Global Admin signs in to Microsoft Entra admin center: https://entra.microsoft.com.

Go to Identity → Users → All users → + New guest user.

Enter your Microsoft account email (the one from live.com).

Send the invitation and accept it from your email.

Sign in again with your Microsoft account.

Option 2: Restore the original guest user

If the guest user was deleted within the last 30 days:

Go to Users → Deleted users → Restore user.

Option 3: Use another Global Admin account

If you have another admin account in the tenant, use that to fix the user type or re-invite your account.

Please let us know if you need further assistance on this.Thanks
Jossein Marmolejo 30 Reputation points

2025-10-20T01:38:59.43+00:00

Hello Vemula,

I was the only globan admin. There are not other users. It's just me. I can't enter to Microsoft Entra.
VEMULA SRISAI 13,985 Reputation points Microsoft External Staff Moderator

2025-10-28T22:31:00.92+00:00

Thank you for the update. Since you were the only Global Administrator and currently cannot access the tenant due to the account type change, you’ll need to recover Global Admin access using Microsoft’s Account Recovery process. for the I have requested few details in private message, please share in private message only.
Jossein Marmolejo 30 Reputation points

2025-10-29T12:44:11.3933333+00:00

I just replied via private message. Thank you for help me.
Malic Tyrell 0 Reputation points

2026-01-19T18:13:00.0933333+00:00

I have the same error but I i just created a Microsoft learn account and in the first module and unit while trying to access the cloud shell I got that error.

Your answer

VEMULA SRISAI 13,985 Reputation points Microsoft External Staff Moderator

2025-10-19T07:00:53.22+00:00

Hello

Thank you for sharing the details. The error AADSTS16000 indicates that your Microsoft account (from live.com) no longer exists as a guest in the tenant. This usually happens when the external (guest) account is converted to an internal (member) account or removed, which breaks the link to your Microsoft account.

Why this happened

The guest user object was converted to a member user incorrectly.

Or the original guest account was deleted, so your Microsoft account is no longer recognized in the tenant.

Since you cannot access the tenant, a Global Administrator from your organization needs to take action:

Option 1: Re-invite your Microsoft account

A Global Admin signs in to Microsoft Entra admin center: https://entra.microsoft.com.

Go to Identity → Users → All users → + New guest user.

Enter your Microsoft account email (the one from live.com).

Send the invitation and accept it from your email.

Sign in again with your Microsoft account.

Option 2: Restore the original guest user

If the guest user was deleted within the last 30 days:

Go to Users → Deleted users → Restore user.

Option 3: Use another Global Admin account

If you have another admin account in the tenant, use that to fix the user type or re-invite your account.

Please let us know if you need further assistance on this.Thanks
Jossein Marmolejo 30 Reputation points

2025-10-20T01:38:59.43+00:00

Hello Vemula,

I was the only globan admin. There are not other users. It's just me. I can't enter to Microsoft Entra.
VEMULA SRISAI 13,985 Reputation points Microsoft External Staff Moderator

2025-10-28T22:31:00.92+00:00

Thank you for the update. Since you were the only Global Administrator and currently cannot access the tenant due to the account type change, you’ll need to recover Global Admin access using Microsoft’s Account Recovery process. for the I have requested few details in private message, please share in private message only.
Jossein Marmolejo 30 Reputation points

2025-10-29T12:44:11.3933333+00:00

I just replied via private message. Thank you for help me.
Malic Tyrell 0 Reputation points

2026-01-19T18:13:00.0933333+00:00

I have the same error but I i just created a Microsoft learn account and in the first module and unit while trying to access the cloud shell I got that error.