Connect to Azure AD - unable to validate credentials, could not establish trust relationship for the SSL/TLS secure channel

Hi All,

i have problem, when i installed azure AD connect then chose customize setting.

i input user name and password global administrator i got this error :

unable to validate credentials. An unexpected error has occurred. The underlying connection was closed: could not establish trust relationship for the SSL/TLS secure channel.

my DC windows server version is 2008 R2 Sp1, i think tls by default on 2008 r@ is not enable, then i enable problem still not solved.

any ideas ?

Thank you

Regards,

Novih Sandra