Never underestimate hints given in Help Forums:
WindowsUse the shortcut in the Start menu under “Start -> Bitnami APPNAME Stack -> Application console” or “Use APPNAME Stack”.
Source: Bitnami Console
Using a regular console to update a redmine installation runnning on Windows 2008 server gave lots of annoying exceptions:
ERROR: Could not find a valid gem 'rake' (>= 12.0.0), here is why: Unable to download data from https://rubygems.org/ - SSL_connect retur ned=1 errno=0 state=SSLv3 read server certificate B: certificate verify failed ( ...)