AlexWMF added the comment: I found the following PEP https://www.python.org/dev/peps/pep-0514/
According to this PEP, starting from python 2.7.11 the backward compatibility was broken, because .dll can't read from the following registry keys anymore: HKEY_LOCAL_MACHINE\Software\Python\PythonCore\<Tag> HKEY_LOCAL_MACHINE\Software\Wow6432Node\Python\PythonCore\<Tag> HKEY_CURRENT_USER\Software\Python\PythonCore\<Tag> HKEY_CURRENT_USER\Software\Wow6432Node\Python\PythonCore\<Tag> That means, the python27.dll (x86/x86_64) tries to reads '2.7-32' and never see old keys like '2.7' ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue26998> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com