virt-who error configuring Hyper-V "Error when enumerating using root/virtualization namespace, trying root/virtualization/v2 namespace"

Issue

• Error configuring virt-who with Hyper-V:

2015-05-07 09:03:43,677 [DEBUG]  @hyperv.py:325 - Error when enumerating using root/virtualization namespace, trying root/virtualization/v2 namespace
2015-05-07 09:03:43,680 [DEBUG]  @hyperv.py:258 - Using NTLM authentication
2015-05-07 09:03:43,737 [DEBUG]  @hyperv.py:285 - NTLM authentication successful
2015-05-07 09:03:48,804 [ERROR]  @virtwho.py:121 - Unable to recover, retry in 60 seconds.
2015-05-07 09:03:48,806 [DEBUG]  @hyperv.py:208 - Hyper-V url: http://10.100.10.100:5985/wsman
2015-05-07 09:03:48,809 [DEBUG]  @hyperv.py:258 - Using NTLM authentication
2015-05-07 09:03:53,904 [DEBUG]  @hyperv.py:290 - Using Basic authentication
2015-05-07 09:03:53,909 [DEBUG]  @hyperv.py:325 - Error when enumerating using root/virtualization namespace, trying root/virtualization/v2 namespace
2015-05-07 09:03:53,911 [DEBUG]  @hyperv.py:258 - Using NTLM authentication
2015-05-07 09:03:58,998 [DEBUG]  @hyperv.py:290 - Using Basic authentication
2015-05-07 09:03:59,003 [ERROR]  @virtwho.py:118 - Error in communication with virtualization backend, trying to recover:
Traceback (most recent call last):
  File "/usr/share/virt-who/virtwho.py", line 111, in _send
    virtualGuests = self._readGuests(config)
  File "/usr/share/virt-who/virtwho.py", line 147, in _readGuests
    return virt.getHostGuestMapping()
  File "/usr/share/virt-who/virt/hyperv/hyperv.py", line 327, in getHostGuestMapping
    return self.getHostGuestMapping()
  File "/usr/share/virt-who/virt/hyperv/hyperv.py", line 322, in getHostGuestMapping
    "root/virtualization/v2")
  File "/usr/share/virt-who/virt/hyperv/hyperv.py", line 123, in Enumerate
    response = self.post(data)
  File "/usr/share/virt-who/virt/hyperv/hyperv.py", line 101, in post
    raise HyperVAuthFailed("Authentication failed")
HyperVAuthFailed: Authentication failed