Security-Kerberos event id 4

I have a local network with Windows Server 2012 R2, main domain controller, connected Site to Site with a virtual Azure Network where there is another *virtual( Windows Server 2012 R2 with AD services role installed. It’s been several weeks that there are AD DS error events (1311) in virtual server.

Windows 2008 VPS via Security-Kerberos event id 4.