title: Authentication with Spring-Security via Active Directory LDAP
body: <p>I can't authenticate using a real active directory, let me explain better I tried to authenticate using the example proposed by spring.io without problem where a internal service is started without any problem.
  reference <a href="https://spring.io/guides/gs/authenticating-ldap/" rel="nofollow noreferrer">https://spring.io/guides/gs/authenticating-ldap/</a></p>
  
  <p>I tried to modify the code below by inserting the configuration of my active directory without success. Can you kindly guide me or show me a real case where a true connection is made without using internal services like those in the examples? I looked on the net but found everything similar to the official example without any real case</p>
  
  <pre><code>@Override
      public void configure(AuthenticationManagerBuilder auth) throws Exception {
          auth
              .ldapAuthentication()
                  .userDnPatterns("uid={0},ou=people")
                  .groupSearchBase("ou=groups")
                  .contextSource()
                      .url("ldap://localhost:8389/dc=springframework,dc=org")
                      .and()
                  .passwordCompare()
                      .passwordEncoder(new LdapShaPasswordEncoder())
                      .passwordAttribute("userPassword");
      }
  </code></pre>
  
  <p>Error show:
  Uncategorized exception occured during LDAP processing; nested exception is javax.naming.NamingException: [LDAP: error code 1 - 000004DC: LdapErr: DSID-0C0907C2, comment: In order to perform this operation a successful bind must be completed on the connection., data 0, v2580</p>