Single sign out with Azure ACS

The problem While developing CronHQ we initially had problems with our Facebook integration. Rule #6 of the Facebook guidelines require us to provide an explicit logout link. 6. Your website must offer an explicit “Log Out” option that also logs the user out of Facebook However Azure ACS 2.0 doesn’t really support single sign out making the requirement a little harder to meet. This isn’t just Facebook being difficult, it makes sense to enforce this on every identity provider that we federate with. [Read More]