I can log into the menu system directly on the server, and also the Windows vSphere client works fine. The List of Limitations for Free VMware ESXi. Please note that ESXi 6.5 and later disable CIM access by default, therefore, the Web Portal will report CIM authentication errors in the ESXi device summary. Avoid trouble: If you are creating the MKS Console IP Group for the purposes of connecting to a remote virtual machine console, make sure ports 443, 902, and 903 are open for the IP addresses you define in the IP group. The port requirement is from VMware. Then use the links that are provided after the tables for firewall rules that are driven by product feature and use case. If hardware status tab is not available, then ensure that port 8443 TCP is opened between the vSphere client and the vCenter server In vCenter 5.x, if searching and sorting VMs in the vSphere client is slow then port 10443 TCP has to be opened between the vSphere client/client PC and the vCenter server (also, opening this port is required for viewing VM … Access thevSphere web client. vSphere Replication appliance. Doutora Ruth Cardoso, 4777 CEP 05477-902. port but not to any port on off the VM. So, I'd start with investigating certificate-related issues. There is no TCP … VMware Transport Modes: Best practices and troubleshooting ESXi remote access - Stack Overflow