NetIQ Aegis 2.1
The Aegis Engine service is stopped when the Aegis host server's Domain membership is changed.
Aegis Engine service can not be started after changing the Aegis Server's Domain membership.
This issue is currently under Development review, and is not immediately correctible. Best practice at this time would be to change the Domain that the machine is a member of prior to installing NetIQ Aegis. Alternately, you may uninstall and re-install NetIQ Aegis if Domain membership of the server has already been changed on the server.