Chapter 3 Authentication for FortiOS 5.0 : Agent-based FSSO : Troubleshooting FSSO
  
Troubleshooting FSSO
When installing, configuring, and working with FSSO some problems are quite common. A selection of these problems follows including explanations and solutions.
Some common Windows AD problems include:
General troubleshooting tips for FSSO
User status “Not Verified” on the Collector agent
After initial configuration, there is no connection to the Collector agent
FortiGate performance is slow on a large network with many users
Users from the Windows AD network are not able to access the network
Users on a particular computer (IP address) can not access the network
Guest users do not have access to network
Can’t find the DCagent service
User logon events not received by FSSO Collector agent
User list from Windows AD is empty
Mac OS X users can’t access external resources after waking from sleep mode