'WSGIRequest' object has no attribute 'user' Django admin

To resolve this go to settings.py where there is new-style MIDDLEWARE (introduced in Django 1.10)

Change that to old-style MIDDLEWARE_CLASSES

https://docs.djangoproject.com/en/stable/topics/http/middleware/#upgrading-pre-django-1-10-style-middleware

I found the answer. The variable name on:

MIDDLEWARE = [    'django.middleware.security.SecurityMiddleware',    'django.contrib.sessions.middleware.SessionMiddleware',    'django.middleware.common.CommonMiddleware',    'django.middleware.csrf.CsrfViewMiddleware',    'django.contrib.auth.middleware.AuthenticationMiddleware',    'django.contrib.messages.middleware.MessageMiddleware',    'django.middleware.clickjacking.XFrameOptionsMiddleware',]

MIDDLEWARE is the new-style configuration introduced in Django 1.10. Change the name to MIDDLEWARE_CLASSES and now it works.

So now the code is:

MIDDLEWARE_CLASSES = [    'django.middleware.security.SecurityMiddleware',    'django.contrib.sessions.middleware.SessionMiddleware',    'django.middleware.common.CommonMiddleware',    'django.middleware.csrf.CsrfViewMiddleware',    'django.contrib.auth.middleware.AuthenticationMiddleware',    'django.contrib.messages.middleware.MessageMiddleware',    'django.middleware.clickjacking.XFrameOptionsMiddleware',]

In case anyone is having this problem with Django 2.0, the following configuration with new-style MIDDLEWARE seems to work (docs here):

MIDDLEWARE = [    'django.middleware.security.SecurityMiddleware',    'django.contrib.sessions.middleware.SessionMiddleware',    'django.middleware.common.CommonMiddleware',    'django.middleware.csrf.CsrfViewMiddleware',    'django.contrib.auth.middleware.AuthenticationMiddleware',    'django.contrib.messages.middleware.MessageMiddleware',    'django.middleware.clickjacking.XFrameOptionsMiddleware',]