Hyper-V Replica via certificates

Hello,

For a schoolproject I must setup the following:

Windows Server 1 <---> WAN <---> Windows Server 2

Windows Server 1 is the Headquarter of the fictional company, while Windows Server 2 is hosted at an external company.

I must test Hyper-V Replication via SSL but I can't get it to work. I followed like ten different tutorials but I keep getting stuck when I want to enable SSL on the second server. I gives the error: No valid Certificate found.

This is what I tried:

- Installing a certificate via CA on my primary server (worked, this machine has a cert)

- Installing a certificate via CA on my secondary server (did not work since it is not in a domain)

- Installing a certificate via Makecert on the first server works.

- Installing a certificate via Makecert on the second server: There is no matching certificate in the issuer's root certstore. Failed

Other information:

Windows Server 1:

Is within a domain
Is a DNS Server
Root CA
IP: 192.168.5.1
DNS: 192.168.5.1
Gateway: 192.168.5.100

Windows Server 2

Is not in a domain
IP: 192.168.6.1
DNS: 192.168.5.1
Gateway: 192.168.6.100

WAN  (WANem)

Is not in a domain
IP eth0: 192.168.5.100
Gateway: 192.168.5.100
IP eth1: 192.168.6.100
Gateway: 192.168.6.100

Sidenote; all machines are running in a seperate Virtual Machine.

WAN is simulated via WANem, a linux distro which simulates a WAN area.

Firewalls are turned off for testing.

I hope someone can point me in the right direction!

Thanks in advance!