import gssapi fails on Win 10

[kamikaze]

import gssapi

Fails with:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\ProgramData\Anaconda3\envs\py36\lib\site-packages\gssapi\__init__.py", line 29, in <module>
    from gssapi.raw.types import NameType, RequirementFlag, AddressType  # noqa
  File "C:\ProgramData\Anaconda3\envs\py36\lib\site-packages\gssapi\raw\__init__.py", line 50, in <module>
    from gssapi.raw.creds import *  # noqa
ImportError: DLL load failed: The specified module could not be found.

I'm using Anaconda if it matters

[kamikaze]

both anaconda and simple Python venv fails. I have installed Microsoft Visual C++ Build Tools and MIT Kerberos for windows. No luck, same issue.

[frozencemetery]

Can you show the full log from the python venv? Create a clean venv, then do pip install gssapi

[kamikaze]

>conda create --name py37 python=3.7
Collecting package metadata (current_repodata.json): done
Solving environment: done

## Package Plan ##

  environment location: C:\Users\kamikaze\envs\py37

  added / updated specs:
    - python=3.7


The following packages will be downloaded:

    package                    |            build
    ---------------------------|-----------------
    python-3.7.5               |       h8c8aaf0_0        18.6 MB  anaconda
    ------------------------------------------------------------
                                           Total:        18.6 MB

The following NEW packages will be INSTALLED:

  ca-certificates    anaconda/win-64::ca-certificates-2019.11.27-0
  certifi            anaconda/win-64::certifi-2019.11.28-py37_0
  openssl            anaconda/win-64::openssl-1.1.1d-he774522_3
  pip                anaconda/win-64::pip-19.3.1-py37_0
  python             anaconda/win-64::python-3.7.5-h8c8aaf0_0
  setuptools         anaconda/win-64::setuptools-42.0.2-py37_0
  sqlite             anaconda/win-64::sqlite-3.30.1-he774522_0
  vc                 anaconda/win-64::vc-14.1-h0510ff6_4
  vs2015_runtime     anaconda/win-64::vs2015_runtime-14.16.27012-hf0eaf9b_0
  wheel              anaconda/win-64::wheel-0.33.6-py37_0
  wincertstore       anaconda/win-64::wincertstore-0.2-py37_0


Proceed ([y]/n)? y


Downloading and Extracting Packages
python-3.7.5         | 18.6 MB   | ############################################################################ | 100%
Preparing transaction: done
Verifying transaction: done
Executing transaction: done
#
# To activate this environment, use
#
#     $ conda activate py37
#
# To deactivate an active environment, use
#
#     $ conda deactivate


(base) C:\Users\kamikaze>conda activate py37

(py37) C:\Users\kamikaze>python -m pip install -U gssapi
Collecting gssapi
  Downloading https://files.pythonhosted.org/packages/99/f0/0858b4eca070da0e4735f883e55a5f13f192713eba01e54e30979b5a33bf/gssapi-1.6.1-cp37-cp37m-win_amd64.whl (684kB)
     |████████████████████████████████| 686kB 6.4MB/s
Collecting six>=1.4.0
  Downloading https://files.pythonhosted.org/packages/65/26/32b8464df2a97e6dd1b656ed26b2c194606c16fe163c695a992b36c11cdf/six-1.13.0-py2.py3-none-any.whl
Collecting decorator
  Using cached https://files.pythonhosted.org/packages/8f/b7/f329cfdc75f3d28d12c65980e4469e2fa373f1953f5df6e370e84ea2e875/decorator-4.4.1-py2.py3-none-any.whl
Installing collected packages: six, decorator, gssapi
Successfully installed decorator-4.4.1 gssapi-1.6.1 six-1.13.0

(py37) C:\Users\kamikaze>python
Python 3.7.5 (default, Oct 31 2019, 15:18:51) [MSC v.1916 64 bit (AMD64)] :: Anaconda, Inc. on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import gssapi
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Users\kamikaze\envs\py37\lib\site-packages\gssapi\__init__.py", line 29, in <module>
    from gssapi.raw.types import NameType, RequirementFlag, AddressType  # noqa
  File "C:\Users\kamikaze\envs\py37\lib\site-packages\gssapi\raw\__init__.py", line 50, in <module>
    from gssapi.raw.creds import *  # noqa
ImportError: DLL load failed: The specified module could not be found.
>>>

[kamikaze]

update: if I will install MIT Kerberos - I get a login/password form which is strange. Is there any way to make it working like Chrome which is able to authenticate seamlessly when accessing same resources?

we use SPNEGO

[simo5]

You need to use the native SSPI to be able to use the interal windows credential cache I believe.
Although trying with the MSLSA: cache type may work too.

[kamikaze]

native SSPI
MSLSA

any example? Thanks

[frozencemetery]

I don't think we have one, sorry. (I only work on Linux.)

I would recommend you start here https://github.com/krb5/krb5/blob/master/src/windows/README#L162

Use of MSLSA isn't specific to python-gssapi though; I'd recommend reaching out to krb5 channels if you get stuck.

Closing since the original issue is resolved by installing krb5.