Hi Vel_VMware
Have got the same error after I removed my hosts (for a testing purpose actually).
Cannot complete a vSphere Distributed Switch operation for one or more host members. vDS operation failed on host [IP], Received SOAP response fault from [<cs p:00007f7c704bacf0, TCP:[IP]:443>]: invokeHostTransactionCall Received SOAP response fault from [<cs p:01ce2d28, TCP:localhost:8307>]: invokeHostTransactionCall An error occurred during host configuration. got (vim.fault.PlatformConfigFault) exception
One thing I've noticed is that the VXLAN host configuration went Invalid from the NSX side, (I'm actually not sure, but maybe coz of active VXLAN session from the cluster .
What I did is removed the VXLAN VMKernel adapter of the affected host (had removed the rest of the VMKernels, except for the management adapter which holds the vDS).
Tried adding the host again in my dedicated vDS and everything worked fine.
Hope this solution help.
Regards,
Cris