after deploying VMware UAG (unified access gateway) ver 3.3 or ver 3.4 , however after the deployment and after the initial configuration completed and the appliance up and running , we tried to reach the appliance URL which https://<ip, host-name>:9443/admin/index.html and nothing come up or you will see error 404 not found and in other browser it say connection refused
digging deploy in the appliance console , you will notice that you can login to console with root account and in logs you would say ;…re-dpoly appliance with admin password…or admin account dose not exist .
this would happen because you are trying to deploy UAG in ESXI directly rather that vCenter either from Esxi web UI or with powershell
this is because vCenter is required to deploy UAG refer to below URLs
Solution :
Re-deploy the UAG from vCenter or try to get vCenter appliance for your Esxi host