Chris Angelico <ros...@gmail.com> wrote: > On Sun, Nov 28, 2021 at 6:38 AM Ulli Horlacher > <frams...@rus.uni-stuttgart.de> wrote: > > > > My program uses https and runs fine on Linux, but on Windows it crashes: > > > > Google chrome and firefox both say the certifacte is valid: > > > > https://fex.flupp.org/fop/U4xC4kz8/X-20211127192031.png > > > > https://fex.flupp.org/fop/mBabXKSz/X-20211127192416.png > > > > Why does Python complain (only on Windows!)? > > > > What version of Python is it, and where did you install it from?
https://www.python.org/ftp/python/3.10.0/python-3.10.0-amd64.exe > On some versions, Python will use Microsoft's provided certificate store. > One solution may be to fetch Mozilla's root certs from PyPI: > > https://pypi.org/project/certifi/ C:\Users\admin>pip install certifi Collecting certifi Downloading certifi-2021.10.8-py2.py3-none-any.whl (149 kB) Installing collected packages: certifi Successfully installed certifi-2021.10.8 Great! Now my program runs without CERTIFICATE_VERIFY_FAILED -- Ullrich Horlacher Server und Virtualisierung Rechenzentrum TIK Universitaet Stuttgart E-Mail: horlac...@tik.uni-stuttgart.de Allmandring 30a Tel: ++49-711-68565868 70569 Stuttgart (Germany) WWW: http://www.tik.uni-stuttgart.de/ -- https://mail.python.org/mailman/listinfo/python-list