Django 1.9 fastcgi IIS fails

I’ve published my Django application to IIS after upgrading Django installation locally , in my virtualenv, and on the server. I just finished migrating my application from Django 1.6 to 1.9 and in DEBUG everything seems to work fine. The published application fails to run:

Error occurred while reading WSGI handler:

Traceback (most recent call last):
  File "c:\python27\Lib\site-packages\wfastcgi.py", line 791, in main
    env, handler = read_wsgi_handler(response.physical_path)
  File "c:\python27\Lib\site-packages\wfastcgi.py", line 633, in read_wsgi_handler
    handler = get_wsgi_handler(os.getenv("WSGI_HANDLER"))
  File "c:\python27\Lib\site-packages\wfastcgi.py", line 605, in get_wsgi_handler
    handler = handler()
  File ".\ptvs_virtualenv_proxy.py", line 102, in get_virtualenv_handler
    handler = get_wsgi_handler(os.getenv('WSGI_ALT_VIRTUALENV_HANDLER'))
  File ".\ptvs_virtualenv_proxy.py", line 76, in get_wsgi_handler
    handler = getattr(handler, name)
AttributeError: 'module' object has no attribute 'wsgi'

Cant find the problem

[JVanloofsvelt]

I found the problem! My virtualenv contained files from an earlier version of Django because Publishing from Visual Studio did not delete remote files that no longer exist in my project’s virtualenv. I just enabled deleting of remote files in my publish config and then it worked.

[huguesv]

I vaguely recall the WSGI handler stuff changing at some point in a Django update?

I created a new django project, and the handler looks like: DjangoWebProject7.wsgi.application (as seen in DjangoWebProject7/settings.py)

And there’s a DjangoWebProject7/wsgi.py that looks like this:

import os

os.environ.setdefault("DJANGO_SETTINGS_MODULE", "DjangoWebProject7.settings")

from django.core.wsgi import get_wsgi_application
application = get_wsgi_application()

If your WSGI_HANDLER doesn’t look like that in your web.config or you don’t have a wsgi.py, then that would be the first thing to try.