Fireware OS 12.5.4 kills remote active directory authentication
Upgraded our T50 to 12.5.4 last night. Mobile SSL-VPN users were immediately unable to authenticate and connect to our Active Directory. Was also unable to login at the authentication page for the firewall. We run a Windows Server 2016 network.
Had to return physically to the office and downgrade back to 12.5.3 Update 1. Everything was back to normal when the downgrade finished. Before downgrading, I was able to confirm that the T50 itself could authenticate to the AD internally with 12.5.4 installed. Appears that only external users were locked out.