One the
http://reviewboard.corp/reviewboard/admin/settings/authentication/ page,
I have "Standard Registration" and "Legacy Authentication Module"
available.
BTW, I have reviewed the logs and see the following error occurring (once again, while I have experience in many other languages, python is not one of them, so I'm not sure if this is relevant)
[Wed May 24 09:30:40.181811 2017] [:error] [pid 1272:tid 1016] ERROR:root:Error loading authentication backend x509: pytz 2014.4 is installed but pytz>=2015.2 is required by []
[Wed May 24 09:30:40.181811 2017] [:error] [pid 1272:tid 1016] Traceback (most recent call last):
[Wed May 24 09:30:40.181811 2017] [:error] [pid 1272:tid 1016] File "D:\\ProgramFiles\\Bitnami\\reviewboard-2.5.9-0\\apps\\reviewboard\\htdocs\\Lib\\site-packages\\ReviewBoard-2.5.9-py2.7.egg\\reviewboard\\accounts\\backends.py", line 935, in _populate_defaults
[Wed May 24 09:30:40.181811 2017] [:error] [pid 1272:tid 1016] cls = entry.load()
[Wed May 24 09:30:40.181811 2017] [:error] [pid 1272:tid 1016] File "build\\bdist.win32\\egg\\pkg_resources.py", line 2182, in load
[Wed May 24 09:30:40.181811 2017] [:error] [pid 1272:tid 1016] self.require(env, installer)
[Wed May 24 09:30:40.181811 2017] [:error] [pid 1272:tid 1016] File "build\\bdist.win32\\egg\\pkg_resources.py", line 2196, in require
[Wed May 24 09:30:40.181811 2017] [:error] [pid 1272:tid 1016] items = working_set.resolve(reqs, env, installer)
[Wed May 24 09:30:40.181811 2017] [:error] [pid 1272:tid 1016] File "build\\bdist.win32\\egg\\pkg_resources.py", line 632, in resolve
[Wed May 24 09:30:40.181811 2017] [:error] [pid 1272:tid 1016] raise VersionConflict(tmpl % args)
[Wed May 24 09:30:40.181811 2017] [:error] [pid 1272:tid 1016] VersionConflict: pytz 2014.4 is installed but pytz>=2015.2 is required by []