Unable to connect to the MKS: Login (username / password) incorrect
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Open /etc/vmware/config with a text editor.
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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…