“Windows Error: provider DLL failed to initialize correctly” on import of cgi module in frozen wxpython app

Question

I have a user of a frozen wxpython app that gets the appended screenshot.

The error message is \"Windows Error: provider DLL failed to initialize correctly\"

Answer 1

I think the minimal solution is to include the SYSTEMROOT environment variable in the Python subprocess.

I have seen the problem when trying to load os.urandom:

self._authkey = AuthenticationString(os.urandom(32)) WindowsError: [Error -2146893795] Provider DLL failed to initialize correctly

It turns out that the _PyOS_URandom on Windows relies on the SYSTEMROOT environment to be set. See: http://bugs.python.org/issue1384175#msg248951 for a detailed explaination