Virtual Machine Cloning Is Failed At 33%

I got two exactly same hardware, installed same ESXi version. Somehow cloning from  other ESXi to one server was working, but another one always failed at 33%.

It only impacts to existing VM cloning but not impact to new created virtual  machines. I spent lot time on the troubleshooting. We replaced cables, switch ports, reinstalled ESXi.

There was no  abnormal logs except following:

2017-11-15T05:47:36.023Z [FFF001A0 verbose 'NfcManager' opID=F39DF7E6-00002211-da-c-bf] [NfcClient] Closing NFC connection to server

2017-11-15T05:47:36.023Z [FFF001A0 warning 'Libs' opID=F39DF7E6-00002211-da-c-bf] SSL: Unknown SSL Error

2017-11-15T05:47:36.023Z [FFF001A0 info 'Libs' opID=F39DF7E6-00002211-da-c-bf] SSL Error: error:1409E10F:SSL routines:SSL3_WRITE_BYTES:bad length

VMware support eventually provided me following KB to workaround the problem. Looks like it’s a bug on ESXi 5.5 2068190.

Disabling SSL for NFC data traffic in vCenter Server

Cloning or deploying from a template takes longer time after upgrading to VMware vSphere 5.1 Update 2 and 5.5

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