I just put in place a Group Policy through AD to lock out accounts after 5 attempts. However this is not taking effect. It has replicated to all of my DC however when I try to log in(Citrix Enviornment) it doesn't work. The accounts never lock out.

My unlock threshord is set to 999 minutes
and my reset unlock attempts is set to 200minutes
We want people to call the help desk to get them unlocked.

However it isn't work. In my test enviornment it works fine.

Please Assist.