Trying to install Google Cloud SDK(Python) on Windows 10 for All Users. Getting the following error. 
This is new machine and start building fresh. Installed python 2.7 version prior to this. 
Please help me to resolve this. 

Output folder: C:\Program Files (x86)\Google\Cloud SDK Downloading
  Google Cloud SDK core. Extracting Google Cloud SDK core. Create Google
  Cloud SDK bat file: C:\Program Files (x86)\Google\Cloud
  SDK\cloud_env.bat Installing components. Welcome to the Google Cloud
  SDK! This will install all the core command line tools necessary for
  working with the Google Cloud Platform. Traceback (most recent call
  last):   File "C:\Program Files (x86)\Google\Cloud
  SDK\google-cloud-sdk\bin\bootstrapping\install.py", line 214, in
  
      main()   File "C:\Program Files (x86)\Google\Cloud SDK\google-cloud-sdk\bin\bootstrapping\install.py", line 192, in main
      Install(pargs.override_components, pargs.additional_components)   File "C:\Program Files (x86)\Google\Cloud
  SDK\google-cloud-sdk\bin\bootstrapping\install.py", line 134, in
  Install
      InstallOrUpdateComponents(to_install, update=update)   File "C:\Program Files (x86)\Google\Cloud
  SDK\google-cloud-sdk\bin\bootstrapping\install.py", line 177, in
  InstallOrUpdateComponents
      ['--quiet', 'components', verb, '--allow-no-backup'] + component_ids)   File "C:\Program Files (x86)\Google\Cloud
  SDK\google-cloud-sdk\lib\googlecloudsdk\calliope\cli.py", line 813, in
  Execute
      self._HandleAllErrors(exc, command_path_string, specified_arg_names)   File "C:\Program Files (x86)\Google\Cloud
  SDK\google-cloud-sdk\lib\googlecloudsdk\calliope\cli.py", line 787, in
  Execute
      resources = args.calliope_command.Run(cli=self, args=args)   File "C:\Program Files (x86)\Google\Cloud
  SDK\google-cloud-sdk\lib\googlecloudsdk\calliope\backend.py", line
  754, in Run
      resources = command_instance.Run(args)   File "C:\Program Files (x86)\Google\Cloud
  SDK\google-cloud-sdk\lib\surface\components\update.py", line 99, in
  Run
      version=args.version)   File "C:\Program Files (x86)\Google\Cloud SDK\google-cloud-sdk\lib\googlecloudsdk\core\updater\update_manager.py",
  line 850, in Update
      command_path='components.update')   File "C:\Program Files (x86)\Google\Cloud
  SDK\google-cloud-sdk\lib\googlecloudsdk\core\updater\update_manager.py",
  line 591, in _GetStateAndDiff
      command_path=command_path)   File "C:\Program Files (x86)\Google\Cloud
  SDK\google-cloud-sdk\lib\googlecloudsdk\core\updater\update_manager.py",
  line 574, in _GetLatestSnapshot
      *effective_url.split(','), command_path=command_path)   File "C:\Program Files (x86)\Google\Cloud
  SDK\google-cloud-sdk\lib\googlecloudsdk\core\updater\snapshots.py",
  line 165, in FromURLs
      for url in urls]   File "C:\Program Files (x86)\Google\Cloud SDK\google-cloud-sdk\lib\googlecloudsdk\core\updater\snapshots.py",
  line 186, in _DictFromURL
      response = installers.ComponentInstaller.MakeRequest(url, command_path)   File "C:\Program Files (x86)\Google\Cloud
  SDK\google-cloud-sdk\lib\googlecloudsdk\core\updater\installers.py",
  line 285, in MakeRequest
      return ComponentInstaller._RawRequest(req, timeout=timeout)   File "C:\Program Files (x86)\Google\Cloud
  SDK\google-cloud-sdk\lib\googlecloudsdk\core\updater\installers.py",
  line 329, in _RawRequest
      should_retry_if=RetryIf, sleep_ms=500)   File "C:\Program Files (x86)\Google\Cloud
  SDK\google-cloud-sdk\lib\googlecloudsdk\core\util\retry.py", line 155,
  in TryFunc
      return func(*args, kwargs), None   File "C:\Program Files (x86)\Google\Cloud
  SDK\google-cloud-sdk\lib\googlecloudsdk\core\url_opener.py", line 73,
  in urlopen
      return opener.open(req, data, timeout)   File "c:\users\cpa8161\appdata\local\temp\tmpxcdivh\python\lib\urllib2.py",
  line 429, in open
      response = self._open(req, data)   File "c:\users\cpa8161\appdata\local\temp\tmpxcdivh\python\lib\urllib2.py",
  line 447, in _open
      '_open', req)   File "c:\users\cpa8161\appdata\local\temp\tmpxcdivh\python\lib\urllib2.py",
  line 407, in _call_chain
      result = func(*args)   File "C:\Program Files (x86)\Google\Cloud SDK\google-cloud-sdk\lib\googlecloudsdk\core\url_opener.py", line 58,
  in https_open
      return self.do_open(build, req)   File "c:\users\cpa8161\appdata\local\temp\tmpxcdivh\python\lib\urllib2.py",
  line 1195, in do_open
      h.request(req.get_method(), req.get_selector(), req.data, headers)   File
  "c:\users\cpa8161\appdata\local\temp\tmpxcdivh\python\lib\httplib.py",
  line 1042, in request
      self._send_request(method, url, body, headers)   File "c:\users\cpa8161\appdata\local\temp\tmpxcdivh\python\lib\httplib.py",
  line 1082, in _send_request
      self.endheaders(body)   File "c:\users\cpa8161\appdata\local\temp\tmpxcdivh\python\lib\httplib.py",
  line 1038, in endheaders
      self._send_output(message_body)   File "c:\users\cpa8161\appdata\local\temp\tmpxcdivh\python\lib\httplib.py",
  line 882, in _send_output
      self.send(msg)   File "c:\users\cpa8161\appdata\local\temp\tmpxcdivh\python\lib\httplib.py",
  line 844, in send
      self.connect()   File "C:\Program Files (x86)\Google\Cloud SDK\google-cloud-sdk\lib\third_party\httplib2__init__.py", line 1081,
  in connect
      raise SSLHandshakeError(e)
  **httplib2.SSLHandshakeError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:661) Failed to install.
I just spent hours trying to make the installer run trying to edit ca cert files but the installer keeps wiping the directories as part of the installation process. In order to make the bundle gcloud sdk installer work, I ended up having to create an environment variable SSL_CERT_FILE and setting the path to a ca cert text file that contained the Google CAs + my company's proxy CA cert. Then the installer ran without issue. It seems that env variable is used by the python http client for CA validation.
Then you need to run gcloud config set custom_ca_certs_file  before running gcloud init
google cloud python sdk installation error - SSL Certification Error