“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

For me, the exact error message was:

WindowsError: [Error -2146893795] Provider DLL failed to initialize correctly

with a trace such as:

  File "C:\Dev\Python\python-2.7.11\lib\tempfile.py", line 35, in 
    from random import Random as _Random
  File "C:\Dev\Python\python-2.7.11\lib\random.py", line 885, in 
    _inst = Random()
  File "C:\Dev\Python\python-2.7.11\lib\random.py", line 97, in __init__
    self.seed(x)
  File "C:\Dev\Python\python-2.7.11\lib\random.py", line 113, in seed
    a = long(_hexlify(_urandom(2500)), 16)
WindowsError: [Error -2146893795] Provider DLL failed to initialize correctly

And what solved it for me was a comment from http://bugs.python.org/issue1384175 (http://bugs.python.org/msg248947), saying the following:

This happened at a call to `os.urandom` for me.
This was in a subprocess.

The bug for me was that I called `_subprocess.CreateProcess` 
with an `env_mapper = {'foo': 'bar'}`. The fix:

    env_mapper = os.environ.copy()
    env_mapper.update({'foo': 'bar'})