• Upgrading vCenter Server Appliance (VCSA) 6.x fails.
• You see the error similar to:

• In the /var/log/vmware/upgrade/requirements-upgrade-runner.log file, you see entries similar to:

ERROR transport.guestops Failed to download from https://xxx.xxx.xxx.xxx:443/guestFile?id=63&token=52c827d9-0385-2a4c-be2d-a4f778fba7d563: [Errno 111] Connection refused

Traceback (most recent call last):

File "/usr/lib/vmware/cis_upgrade_runner/libs/sdk/transport/guestops.py", line 1329, in downloadFileContent

req = urllib2.urlopen(downloadUrl)

File "/usr/lib/python2.7/urllib2.py", line 154, in urlopen

return opener.open(url, data, timeout)

File "/usr/lib/python2.7/urllib2.py", line 429, in open

response = self._open(req, data)

File "/usr/lib/python2.7/urllib2.py", line 447, in _open

'_open', req)

File "/usr/lib/python2.7/urllib2.py", line 407, in _call_chain

result = func(*args)

File "/usr/lib/python2.7/urllib2.py", line 1241, in https_open

context=self._context)

File "/usr/lib/python2.7/urllib2.py", line 1198, in do_open

raise URLError(err)

URLError: <urlopen error [Errno 111] Connection refused>