Weblogic10.3.6:FailedLoginException

Error:
Caused By: javax.security.auth.login.FailedLoginException: [Security:090303]Authentication Failed: User weblogic weblogic.security.providers.authentication.LDAPAtnDelegateException: [Security:090295]caught unexpected exception

 

Solution:

1: remove the boot.properties file completely from the managed server directory.
2:remove ManagedServerDir(user_projects/domains/base_domain/servers/...)/data/ldap directory completely.
3: Always keep backup of files before removing it.
4: Now try to start the server from the command prompt and provide the username/password used to login to the Admin Console