For your convenience, and to reduce the response time, I strongly suggest opening a support ticket in email@example.com
nMC is on 172.28.34.181:8084 , after installation you logged off and logged back on to apply security group 'nworks Management Center' on local box;
VIC is on 172.28.x.x and you use proper FQDN/IP address of nMC box while setting it up;
Both services are set to execution under same Active Directory user account, that is a member of "administrators" local groups on both VIC and nMC;
Firewall is disabled / ports are allowed on every box;
No networking issues / several NICs / IP aliasing;
Please follow up whether you've opened the support case.