Contents
What is the cause of a user login authentication failure?
Once you have identified the likely cause of user login identification failure, refer to Resolving User Login Authentication Failures for information about how to resolve the issues. The description for the above diagram is as follows: Authenticator misconfigured.
What does it mean to fail to authenticate with OTP?
User fails to authenticate using OTP with the error: “Authentication failed due to an internal error” Error received (client event log). OTP authentication cannot complete as expected. The name or address of the Remote Access server cannot be determined. Error code: .
What to look for in Windows security logs?
Check Windows Security logs for failed logon attempts and unfamiliar access patterns. Authentication failures occur when someone or some application passes incorrect or otherwise invalid logon credentials. The Security log includes security-related events, especially those related to authentication and access.
What are some examples of troubleshooting with logs?
This article presents common troubleshooting use cases for security, crashes, and failed services. Examples demonstrate diagnosing the root cause of the problem using the events in your logs. Remember to check warnings and errors proceeding a critical event to see the bigger picture.
What causes logon to fail with no data?
Logon failure: unknown user name or bad password. No Data will be available. This behavior may occur if one or more of the following conditions are true: The password is changed on the account with which the service is configured to log on. The password data in the registry is damaged.
Is there a way to debug Windows authentication errors?
Debugging Windows Authentication Errors. When using Windows authentication as a security mechanism, the Security Support Provider Interface (SSPI) handles security processes. When security errors occur at the SSPI layer, they are surfaced by Windows Communication Foundation (WCF).
What to do if Windows Authentication is not working?
If you are sure you are using Windows authentication, determine whether your WCF configuration uses Kerberos direct or Negotiate. Once you have determined whether your configuration is using the Kerberos protocol or NTLM, you can understand error messages in the correct context.