You can't join a domain if there's more than five minutes difference between the domain and the client. Also, you can't join if there's already a device with the same name.
Mlenk: "Please make sure that your ASG is able find your AD server in DNS using the AD-SSO-Domain. If it doesn't an acceptable work-around is to add a DNS Request Route that delegates your entire AD-SSO domain to your AD server."
If none of those were your problem, please click on [Go Advanced] below and attach a picture of the error you see.
Cheers - Bob
Sophos UTM Community Moderator Sophos Certified Architect - UTM Sophos Certified Engineer - XG Gold Solution Partner since 2005
Sorry, if I enlarge that to a legible size, there aren't enough pixels. Instead of a complete screen capture, use the Snipping Tool that comes with Windows.
now sophos joined to domain in user name i type administrator@almanhal.eg.local and working and status is joined to domain but i missed something when i try to ping our internally machine from sophos by name or ip i got error .