ImportError: DLL load failed while importing win32gui: The specified procedure could not be found

[mosaleh52]

when trying to import win32gui or win32api this is the output error
'''
C:\Users\m\Desktop\auto timer>main.py
Traceback (most recent call last):
File "C:\Users\m\Desktop\auto timer\main.py", line 3, in
import win32gui
ImportError: DLL load failed while importing win32gui: The specified procedure could not be found.
'''
after install pywin32 for the first time it was working but now it doesn't
what i have tried to solve this proplem:
----- reinstall pywin32 (it dosnot work )
-----create a conda env it doesn't work ( i have python installed seperatly , mini conda for ven only )
her is my system info
OS Name: Microsoft Windows 10 Home Single Language
OS Version: 10.0.19042 N/A Build 19042
Python 3.9.5
Name: pywin32
Version: 301
conda 4.10.3

[primal100]

I'm getting a similiar issue with pywin32 v301.

DLL load failed while importing win32security: The specified procedure could not be found.

Works fine in pywin32 v300.

Windows 10 build 18363, python 3.8.6

[mmaylat]

I'm getting identical issues for python 3.6 versions with pywin32-301.

Don't see any problem with higher python versions.

[mosaleh52]

@mmaylat @primal100 after uninstall with pip then creating conda env with reboot it worked (pywin32 is defult installed in conda env)

[grgeorgeivanov]

We are also seeing this on Python 3.6.6, during import requests_negotiate_sspi with pywin32==301. Works fine with <300

[elbakramer]

Getting similar issue when installed via pip.

$ pip install pywin32==301

System background:

• windows 10
• conda 4.10.1
• python 3.8.8 (64bit)
• pywin32-301

One of the workarounds that actually worked was just to downgrade to version 300:

$ pip install pywin32==300

or revert to initial conda distribution (version 228):

$ conda install pywin32

Another was to remove any existing dlls and copy valid ones in sys.prefix folder:

import os
import sys
import glob
import shutil
import distutils.sysconfig

lib_dir = distutils.sysconfig.get_python_lib(plat_specific=1)

files = glob.glob(os.path.join(lib_dir, "pywin32_system32\\*.*"))
bases = [os.path.basename(file) for file in files]

bad_dest_dirs = [
    os.path.join(sys.prefix, "Library\\bin"),
    os.path.join(sys.prefix, "Lib\\site-packages\\win32"),
]

for base in bases:
    for bad_dest_dir in bad_dest_dirs:
        bad_fname = os.path.join(bad_dest_dir, base)
        if os.path.exists(bad_fname):
            os.unlink(bad_fname)

for file in files:
    shutil.copy(file, sys.prefix)

[mhammond]

I suspect this will work better in build 303, but please reopen if it doesn't (but see also https://github.com/mhammond/pywin32#the-specified-procedure-could-not-be-found--entry-point-not-found-errors)

[marxangels]

import pywintypes # Not used, but need it for win32gui to import correctly
import win32gui

stackoverflow

[PetteriAimonen]

Note for people hitting this after upgrading to pywin32 version 305:

The way pywintypesXX.dll is searched was changed by commit 50c3113.
This causes the file to be moved under pywin32_system32 subdirectory when packaged by e.g. pyinstaller.
This may need changes in installation scripts to make sure the old incompatible files do not stay lingering after upgrade.

[tomate1]

Getting similar issue when installed via pip.

$ pip install pywin32==301

System background:

• windows 10
• conda 4.10.1
• python 3.8.8 (64bit)
• pywin32-301

One of the workarounds that actually worked was just to downgrade to version 300:

$ pip install pywin32==300

or revert to initial conda distribution (version 228):

$ conda install pywin32

Another was to remove any existing dlls and copy valid ones in sys.prefix folder:

import os
import sys
import glob
import shutil
import distutils.sysconfig

lib_dir = distutils.sysconfig.get_python_lib(plat_specific=1)

files = glob.glob(os.path.join(lib_dir, "pywin32_system32\\*.*"))
bases = [os.path.basename(file) for file in files]

bad_dest_dirs = [
    os.path.join(sys.prefix, "Library\\bin"),
    os.path.join(sys.prefix, "Lib\\site-packages\\win32"),
]

for base in bases:
    for bad_dest_dir in bad_dest_dirs:
        bad_fname = os.path.join(bad_dest_dir, base)
        if os.path.exists(bad_fname):
            os.unlink(bad_fname)

for file in files:
    shutil.copy(file, sys.prefix)

this was helpful to me
306 release broke my code
python cant find pywintypesXX anymore

I embed python in another application using Py_RunSimpleString.

on version 305 everything works and the dlls are found there in ..Lib\site-packages\pywin32_system32

But on release 306 the dlls are simply not found anymore

I downgraded because it was easier in my case, I believe that copying to sys.prefix should work aswell
But this is really annoying