HELP:Error with login module!!!

[darknesplus@…]

Hi all and congratulations for trac, it's pretty good. I'm tying to configure my trac system to use authentication, but I have an error when I clicked in login link. I set authz_file correctly (I think) but I don`t know because this error. At bottom of this message I send the pyton traceback. Please, can anybody help me. Thanks

Python Traceback

Traceback (most recent call last):
  File "C:\Python24\Lib\site-packages\trac\web\main.py", line 356, in dispatch_request
    dispatcher.dispatch(req)
  File "C:\Python24\Lib\site-packages\trac\web\main.py", line 224, in dispatch
    resp = chosen_handler.process_request(req)
  File "C:\Python24\Lib\site-packages\trac\web\auth.py", line 95, in process_request
    self._do_login(req)
  File "C:\Python24\Lib\site-packages\trac\web\auth.py", line 116, in _do_login
    assert req.remote_user, 'Authentication information not available.'
AssertionError: Authentication information not available.

[Emmanuel Blot]

Please read the big red box in the NewTicket page: contact the MailingList for installation and configuration issues.

Moreover this issue is quite a common one, and is documented in the TracFaq and already reported many times in existing tickets.