Windows Server 2012 connectivity issue

Greetings,

I am trying to solve the connectivity issue on our virtual Windows Server 2012.

After the update I can not perform simple urlretrieve command with Python (previously it worked).

The "netsh int tcp set global ecncapability=disabled" did not help (see https://github.com/scisoft/autocmake/issues/15 ) .

Any help, please, what to change in setting as Admin ?

----------------------------------------------------------------

Microsoft Windows [Version 6.2.9200]
(c) 2012 Microsoft Corporation. All rights reserved.

C:\Windows\system32>netsh int tcp set global ecncapability=disabled
Ok.


C:\Windows\system32>python
Python 2.7.10 (default, May 23 2015, 09:44:00) [MSC v.1500 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import urllib
>>> urllib.urlretrieve(url="https://github.com/scisoft/autocmake/raw/master/lib/config.py",filename="config.py")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Python27\lib\urllib.py", line 98, in urlretrieve
    return opener.retrieve(url, filename, reporthook, data)
  File "C:\Python27\lib\urllib.py", line 245, in retrieve
    fp = self.open(url, data)
  File "C:\Python27\lib\urllib.py", line 213, in open
    return getattr(self, name)(url)
  File "C:\Python27\lib\urllib.py", line 443, in open_https
    h.endheaders(data)
  File "C:\Python27\lib\httplib.py", line 1049, in endheaders
    self._send_output(message_body)
  File "C:\Python27\lib\httplib.py", line 893, in _send_output
    self.send(msg)
  File "C:\Python27\lib\httplib.py", line 855, in send
    self.connect()
  File "C:\Python27\lib\httplib.py", line 1274, in connect
    server_hostname=server_hostname)
  File "C:\Python27\lib\ssl.py", line 352, in wrap_socket
    _context=self)
  File "C:\Python27\lib\ssl.py", line 579, in __init__
    self.do_handshake()
  File "C:\Python27\lib\ssl.py", line 808, in do_handshake
    self._sslobj.do_handshake()
KeyboardInterrupt
>>>

September 4th, 2015 11:21am

We need information about your Windows Server network configuration.  Error messages from python don't help at all.

What is the output of ipconfig /all on the Windows Server box?  Do you have another system whose connectivity is working fine?  What is the ipconfig output from it to compare to this box?  What is the hypervisor - Hyper-V or VMware?  What version?  Have you checked the virtual switch configuration?  Have you made any changes to the physical NIC to which the virtual switch is defined?  (For example, updating a NIC driver can sometimes cause issues that are resolved by deleting the virtual switch and recreating it?

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September 4th, 2015 7:16pm

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