Failover clustering validation report error: Validate Active Directory Configuration

I am deploying failover clustering on windows server 2012 r2 enterprise

When validate configuration, failover cluster validation report an error

At system configuration > Validate Active Directory Configuration

This is error message:

Coectivity to a writable domain controller from node srv-12-01.clusterdomain.local could not be determined because of this error: Could not get domain controller name from machine srv-12-01.

Coectivity to a writable domain controller from node srv-12-02.clusterdomain.local could not be determined because of this error: Could not get domain controller name from machine srv-12-02.

Node(s) srv-12-01.clusterdomain.local srv-12-02.clusterdomain.local caot reach a writable domain controller. Please check coectivity of these nodes to the domain controllers.

I have 1 domain controller, 2 member server (joined domain and login with domain administrator user)

Can anyone help me?

Thank you