Why is my network experiencing lots of Active Directory account lock-outs?

Article #: Product Castle
KB-136 Active Directory Any


A guide to solving a high number of account lockouts on the active directory accounts.


We are experiencing a high number of account lockouts on our users' Active Directory accounts. Although we are not using Kerberos, the Smoothwall diagnostics indicate that Smoothwall is attempting to Obtain ticket for principal HTTP/*hostname*


Ensure that the DNS attribute, in the computer account, on active directory has a FQDN

Navigate to Computers.

Open the Smoothwall record’s properties and ensure a FQDN has been added into the DNS name section.


Last updated: Author: Contributions by:
18 July 2017 Natasha Jones