This is currently breaking SSPI support on Windows in my AsyncSSH package, and I don't see any obvious workaround I can put in. The issue appears to affect the Python C API that pywin32 is using.

Original comment by: rfrederick

This also breaks requests-kerberos: https://github.com/requests/requests-kerberos

Original comment by: akapocsi

This breaks requests-negotiate-sspi as well: brandond/requests-negotiate-sspi#12

As a user of requests-negotiate-sspi I'm affected by this so am just posting here so I get notified of any updates...

I just saw a comment stating that a new release was imminent so I'm putting in a final plug for this issue in the hope that a fix makes it in to the new release!

Should be fixed by #07202650

hrm - github didn't link the above commit - let's try 0720265 :)

To automatically link (and close) this issue from the commit message you need to prefix the issue number with one of the recognised keywords - e.g.

Closes #748
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It seems the issue is still there.
I installed pywin32 222 and tried the following code:

import requests
from requests_negotiate_sspi import HttpNegotiateAuth
r = requests.get('https://xxx', auth=HttpNegotiateAuth())

Still got the following error:

  File "C:\Python\lib\site-packages\win32\lib\sspi.py", line 111, in __init__
    None, auth_info)
ValueError: year 30828 is out of range

That's strange since it definitely works for me.

Are you sure you're running the latest? You can find out programmatically, in the exact same python session where you got the exception just run the below commands:

import win32api
fixed_file_info = win32api.GetFileVersionInfo(win32api.__file__, '\\')
fixed_file_info['FileVersionLS'] >> 16

Not sure if there's an easier way to get the version - I found that snippit on SO.

It's probably pywintypesxx.dll that matters here:

import pywintypes, win32api
fixed_file_info = win32api.GetFileVersionInfo(pywintypes.file, '\')
fixed_file_info['FileVersionLS'] >> 16
222

(sob - my markup foo is poor - pywintypes.__file__)

You are correct Mark. My win32api is 222 but pywintypes is 220. Do you know how to update it to 222?

I found that I have both pywin32 (222) and pypiwin32 (220) installed. Do you know what's the difference between them?

>>> import win32api
>>> fixed_file_info = win32api.GetFileVersionInfo(win32api.__file__, '\\')
>>> fixed_file_info['FileVersionLS'] >> 16
222

>>> import pywintypes
>>> fixed_file_info = win32api.GetFileVersionInfo(pywintypes.__file__, '\\')
>>> fixed_file_info['FileVersionLS'] >> 16
220

I suspect the correct version is in the lib\site-packages\pywin32_system32 directory, and for some reason the post-install script failed to copy it to the system32 (or SysWow64, depending on 64 vs 32 bit) directory.

Running python Scripts\pywin32_postinstall.py -install from an elevated command prompt should do the right thing.

Its the case. Mark. But I just wonder with pypiwin32 I don't need to run another except for 'pip install pypiwin32'. Is it possible to update the pypiwin32 module to 222 too? requests-negotiate-sspi depends on it.

I think @xoviat just converted the existing installers. Best I can tell, wheel doesn't have any postinstall script support, although maybe I missed it.

It worked. Thank you!