Unable to connect to the MKS: Login (username / password) incorrect
Open /etc/vmware/config with a text editor.
Add this: vmauthd.server.alwaysProxy = “TRUE”
Check your firewall config/network setup. This error is caused by your vSphere client not able to communicate with the ESX/ESXi host directly.
All “Unable to connect to the MKS:” errors are network issues. Do not be fooled by the mention of certificate issues…