Unable to perform Kerberos Authentication on Apache HTTPD

Issue

• I use an environment with Windows clients and a Linux webserver. Active Directory provides Kerberos authentication services. I am able to use Kerberos Authentication with simple apache website, but when configuring Kerberos Authentication on a VirtualHost the authentication is unsuccessful and the logs are showing the following output :

  kerb_authenticate_user entered with user (NULL) and auth_type Kerberos
  kerb_authenticate_user entered with user (NULL) and auth_type Kerberos
  Acquiring creds for HTTP@krbtest
  Verifying client data using KRB5 GSS-API
  Client didn't delegate us their credential
  Warning: received token seems to be NTLM, which isn't supported by the Kerberos module. Check your IE configuration.
  GSS-API major_status:00010000, minor_status:00000000
  gss_accept_sec_context() failed: An unsupported mechanism was requested (, Unknown error
  

• How can I use Kerberos authentication for websites, when virtual hosts should be used?