Issues

• CVE-2019-16294 reported on Scintilla dll

  pythonwin
  mhammond/pywin32#2793 · Filter by author rajeshrd123 opened on Aug 20, 2026
  4

• WM_ENDSESSION is never received by the window procedure

  mhammond/pywin32#2792 · Filter by author kodemeister opened on Aug 20, 2026

• Online documentation code wrapping is often broken

  documentation
  mhammond/pywin32#2784 · Filter by author Avasam opened on Jun 24, 2026
  

• First WM_CREATE message not sent to wndproc

  bug
  mhammond/pywin32#2727 · Filter by author lir-ht opened on Mar 28, 2026
  1

• Prohibit casting an interface to an interface of a totally different coclass

  enhancement
  mhammond/pywin32#2719 · Filter by author geppi opened on Feb 23, 2026

• Typed dispatch (makepy) fails with int() argument must be ... not 'VARIANT' when passing explicit VARIANT for [in,out] long*

  mhammond/pywin32#2713 · Filter by author sxiaoth opened on Feb 18, 2026
  3

• PyCOMTest currently skipped on ARM64 (limited COM support?)

  help wanted
  mhammond/pywin32#2690 · Filter by author Avasam opened on Dec 9, 2025

• win32trace global namespace handling may be simplified

  enhancementgood first issue
  mhammond/pywin32#2665 · Filter by author Avasam opened on Oct 18, 2025

• win32com uses system default lcid which creates problems

  mhammond/pywin32#2663 · Filter by author panda-34 opened on Oct 6, 2025

• pythonwin.exe debug error

  bugpythonwin
  mhammond/pywin32#2662 · Filter by author anderemaldi opened on Oct 6, 2025

• Online documentation character encoding issue

  documentation
  mhammond/pywin32#2659 · Filter by author Avasam opened on Sep 29, 2025

• Online documentation href issues

  documentation
  mhammond/pywin32#2658 · Filter by author Avasam opened on Sep 29, 2025

• EnsureDispatch only works with classes registered in the registry

  mhammond/pywin32#2646 · Filter by author Chronial opened on Aug 4, 2025

• def SvcShutdown in win32serviceutil.ServiceFramework can't accept SHUTDOWN signal when shut down

  mhammond/pywin32#2644 · Filter by author shaobingchen opened on Jul 23, 2025

• Code folding doesn't work with mouse

  patchpythonwin
  mhammond/pywin32#2639 · Filter by author panda-34 opened on Jul 12, 2025
  2

• Incorrect syntax highlighting for f-strings

  pythonwin
  mhammond/pywin32#2638 · Filter by author panda-34 opened on Jul 12, 2025

• RuntimeError: servicemanager.__file__ could not be loaded - win32 error code is 193

  mhammond/pywin32#2633 · Filter by author Crhis35 opened on Jun 25, 2025
  3

• VBA variable passed to a COM object becomes null

  mhammond/pywin32#2617 · Filter by author sgolev opened on May 31, 2025

• ImportError: DLL load failed while importing win32api: The specified procedure could not be found

  mhammond/pywin32#2597 · Filter by author clckwrkbdgr opened on May 5, 2025
  6

• Python C API Deprecations (CPython 3.16 removals)

  mhammond/pywin32#2588 · Filter by author Avasam opened on Apr 29, 2025
  2

• Pywin32 - DLL load failed while importing _win32sysloader

  mhammond/pywin32#2580 · Filter by author Kuhndog444 opened on Apr 25, 2025
  15

• PyCColorDialog.SetCustomColors returns error without setting exception

  bug
  mhammond/pywin32#2579 · Filter by author Avasam opened on Apr 24, 2025

• Late binding not consistently used

  mhammond/pywin32#2505 · Filter by author katomu opened on Mar 27, 2025

• Pythonwin.exe /new /run silently fails and does nothing in Python Development Mode (w/ Fault handlers enabled)

  bugpythonwin
  mhammond/pywin32#2504 · Filter by author Avasam opened on Mar 27, 2025

• Technical Debt: Should win32con.MIIM_TYPE be added to win32gui_struct.EmptyMENUITEMINFO's default mask ?

  mhammond/pywin32#2501 · Filter by author Avasam opened on Mar 26, 2025