Can suddenly no longer log into Azure account

Question

Can suddenly no longer log into Azure account

Richard Demar 0

Can suddenly no longer log into Azure account so I cannot cancel my developer support subscription

VEMULA SRISAI 9,345 Reputation points Microsoft External Staff Moderator

2026-02-12T18:34:34.4633333+00:00

Hello Richard Demar,

To help you further, could you please let me know what specific error message you are seeing when trying to access the Azure portal? This will help identify whether the issue is related to sign‑in, MFA, tenant access, or subscription restrictions, and we can guide you with the right troubleshooting steps
Richard Demar 0 Reputation points

2026-02-12T18:46:01.68+00:00

When I try to login and select the "use a code" option and enter the code from the Microsoft Authenticator application this is what I get for error codes -

Error Code: 500121

Request Id: cca03694-d037-488a-bdca-c36cfa2f0700

Correlation Id: 019c532a-dccf-7779-aa15-ad90d7e83c37

Timestamp: 2026-02-12T18:44:27Z
VEMULA SRISAI 9,345 Reputation points Microsoft External Staff Moderator

2026-02-12T19:57:50.3333333+00:00
Error 500121 usually indicates that the sign-in was blocked during the multi-factor authentication (MFA) step. Since you’re entering a code from Microsoft Authenticator and it’s failing, this typically points to one of the following:

The MFA registration for the account is out of sync

The Authenticator app is not properly linked anymore

A Conditional Access or security policy is blocking the sign-in

The account may be temporarily locked or disabled

Please try the following:

On the sign-in screen, select “Sign in another way” and check if you can use an alternate verification method (SMS, phone call, etc.).

Try signing in using an InPrivate/Incognito browser session or from a different browser/device.

Ensure the time on your mobile device is set automatically — incorrect device time can cause Authenticator codes to fail.

If this is a personal Microsoft account, you can attempt recovery at: https://account.microsoft.com

If this is a work/Entra ID account and you are the only admin, please let us know.
Richard Demar 0 Reputation points

2026-02-13T15:36:01.1833333+00:00

Thank you, I tried the other options, this is the only account and I'm the only admin.
VEMULA SRISAI 9,345 Reputation points Microsoft External Staff Moderator

2026-02-13T16:56:05.13+00:00
Richard Demar Error Code 500121 indicates that authentication failed during the strong authentication (MFA) request. This typically happens when the user does not complete the MFA prompt, times out, denies the request, or has an issue with their MFA configuration.

Check if the user is MFA‑blocked

Go to: Entra ID → Security → Multifactor authentication → Block/unblock users and confirm whether the account is blocked.

Re‑register MFA

Ask the user to:

Remove the account from the Microsoft Authenticator app

Sign in again to the Security Info page

Re‑add Microsoft Authenticator by scanning the new QR code

Check Conditional Access (CA) Policies

Ensure no CA policy is preventing the sign‑in. Review policies for:

Device compliance requirements

Location-based restrictions

Risk-based access blocks

For your reference: https://learn.microsoft.com/en-us/entra/identity/authentication/howto-mfa-userdevicesettings
VEMULA SRISAI 9,345 Reputation points Microsoft External Staff Moderator

2026-02-16T17:48:25.2233333+00:00

Richard Demar Just following up to check whether you’ve had a chance to review the steps and please share the details to submit support request for tenant recovery. Please let us know if you were able to proceed or if you need any further assistance from our side.