Edge SWG (ProxySG)/ASG is not able to join AD domain. The following error is displayed:
Time between Edge SWG/ASG and active directory server is not synchronized.
Synchronize time between Edge SWG/ASG and active directory server. This can be done by configuring the same NTP server on both Edge SWG/ASG and active directory server.
Refer to KB article 170542 for more information on configuring NTP on Edge SWG/ASG.