Connecting to Non-Federated IWA enabled ArcGIS Server with Python API

[Anonymous User]

Hi,

I'm trying to connect to a 10.2.2 ArcGIS Server that has web tier authentication enabled. We have IWA/NTLM set on IIS. This is a non-federated server. I'm trying to use this example: Working with different authentication schemes | ArcGIS for Developers 

When I execute it with my server URL I get an error: "UnboundLocalError: local variable 'resp' referenced before assignment". Fails at line 1047 of the "portal.py" package. Attached is a screenshot of my "conda list" command. According to this blog post I should be able to do this: Turbocharge your Python scripts with ArcGIS API for Python v1.3 | ArcGIS Blog 

I'm trying to make requests with python to an IWA server. Any other recommendations would be appreciated. Thanks!

[Anonymous User]

Is it at all possible to switch from an NTLM server to a Kerberos server? Our internal testing asserted that this functionality worked against a Kerberos server. We got the error you received when testing python3.6.1 against an NTLM server, which we thought was related to a pywin32 bug introduced in python3.6.1. It's possible that this error is something else, however, that affects more versions of python.

[AngusHooper]

Hi, we are also receiving the above issue. Unfortunately Kerberos is not an option. Is there a python version or environment you can recommend for testing?

[FredericWalter]

Hi,

We 've got exactly the same issue trying to connect to Portal for ArcGIS 10.5.1 through a web adaptor with IWA using Python 3.6.4 and ArcGIS API for Python 1.3. Finally, we solved it by installing the winkerberos python package. Hope it works for you too.

[deleted-user-0NXDqYAmJ8kX]

Installing winkerberos worked for me.

Thanks.