Okta One-Time Password Verification Attempt Limitations

Okta evaluates multiple failed Multi-Factor Authentication (MFA) attempts differently depending on the platform version and the challenge method. On the Okta Classic Engine, users experience an account lockout after five failed attempts. On Okta Identity Engine (OIE), five consecutive failed attempts trigger a temporary authenticator lockout and generate the following HTTP status code:

429 Too Many Requests

A successful MFA challenge response resets the lockout counter.

• Okta Identity Engine (OIE)
• Okta Classic Engine
• Multi-Factor Authentication (MFA)

How does Okta evaluate multiple OTP Authentication attempts?

Review the platform-specific lockout behaviors and API challenge differences to understand how Okta handles multiple failed authentication attempts.

• Okta Classic Engine locks out the user after five consecutive failed MFA attempts. Okta hardcodes this value, preventing administrators from changing it. The user must successfully log in with MFA to reset the lockout counter.
• Okta Identity Engine (OIE) allows users to enter an OTP up to five times. After that, the correct OTP is invalidated to prevent potential brute-force attacks. Okta returns HTTP status code 429, indicating "too many requests." A message appears on the user interface, and an entry is written to the System Log. Users aren't locked out of their accounts and may request another OTP immediately.
• Okta handles API call challenges differently from User Interface challenges. When an API call fails, Okta allows 5 attempts before locking the user out of the Okta account. Okta hardcodes these five failed attempts, preventing them from being modified. A successful MFA challenge response resets the counter.