title: Azure AD Connect "Unable to validate credentials"
body: <p>I am working on a already functioning Azure Ad Connect VM, it syncs and the proxy connection responds with the code 200.
  BUT whenever i want to sign in, in the AAD connect in my VM, with my admin Account, i get this error.
  &quot;Unable to validade credentials due to an expected error. Restart Azure AD Connect with th/ InteractiveAuth Option to further diagnose this issue.&quot;</p>
  <p>Any idea what must cause this? I have tried every forum idea i could find with no answer. OH and upgrading is also no idea since to upgrade i need to SIGN IN also...which i can´t.</p>
  <p>Thanks!</p>