Python3.7 only supports pywin32 (223). Any higher version will produce DLL load failed: The specified procedure could not be found

[Coderx7]

I noticed any versions higher than 223 wont work with Python3.7.4 and will generate :

ImportError: DLL load failed: The specified procedure could not be found.

I tested different approaches and yes I do run the pywin32_postinstall.py -install for all versions.
There is also something weird and that is, intrestingly, importing modules in PythonWin doesnt issue any errors at all while basically everywhere else the error exists and turns up!

• Expected behavior: Newer versions should also work well on Python3.7.4

• Atual behavior: Only version 223 works with Python 3.7.4

• Steps to reproduce the problem :

  1. Install the Python3.7.4,
  2. Install Pywin32 the latest version (either using the installer or pip)
  3. Import win32api

• Version of Python and pywin32
  Python:

Python 3.7.4 (default, Aug  9 2019, 18:34:13) [MSC v.1915 64 bit (AMD64)] :: Anaconda, Inc. on win32

pywin32 : all versions greater than 223 wont work

224, 225, 226, 227

[mhammond]

Anaconda's Python packages parts of an old pywin32. See #1409, #1406, #1180, etc - I really should clean these up and dupe some against each other, but I think #1409 has the clearest description. I'm going to close this as I don't think it adds anything new to those issues, but I'm happy to reopen if that's wrong.

[Coderx7]

Thanks a lot really appreciate it. managed to solved it based on this comment .
Basically this as you said was caused because of the "Older" dlls still be residing some where and thus not allowing for the newer dlls to replace them.
What I actually did was to uninstall the old version (my current version) then Installed Everything and searched for these two DLLs : ( pythoncom37.dll and pywintypes37.dll) and lo and behold! there were dozens of them scattered in different anaconda3's directories and also in system32.
I deleted all of them. (Important note, I also had to close any open editor, in my case my VSCode) and then simply did :

pip install pywin32

followed by

python Scripts\pywin32_postinstall.py -install

and thats it. all is fine now and the DLL issue is gone for good!
Thank you very much for your prompt reply and help.
Have a wonderful day sir ;)

by the way, here is a screenshot of all the folders that had these two DLLs in them (taken from my recycle bin) in case it might come in handy later on for anyone out there :

[johann-petrak]

I just got this bug after installing miniconda and python 3.9 in a separate environment and subsequently other packages using pip.

I never installed pywin32 explicitly.

Then Jupyter notebook did not work and I found this jupyter issue: jupyter/notebook#4980

Running python [environment path]/Scripts/pywin32_postinstall.py -install fixed this, but how on earth is this supposed to be something a user needs to do and figure out?

[mhammond]

The problem is that jupyter bundles them in non-standard places. There's really no way pywin32 can know about that. You should file a bug asking them to install it via pip, or otherwise installed somewhere that a user trying to upgrade via pip succeeds.

[johann-petrak]

Thanks, I was trying to figure out whose bug this is!

[johann-petrak]

So it seems ultimately this should get dealt with by Anaconda see conda-forge/pywin32-feedstock#18