Firewall Client cannot authenticate with ISA Server (ISA 2000)
Posted on 2007-11-20
We have the Firewall client installed on a couple of PC's and laptops. Recently one of our company laptops has been experiencing a problem. When the user either tries to browse the Internet or download mail from Yahoo UK via Outlook Express, the firewall client icon appears with an exclamation mark. The message is "Cannot authenticate with ISA Server servername"
The strange thing is....the user was previously able to download his mail and browse. Not sure what has changed and why the problem is suddenly ocurring.
Also should mention that this machine is NOT a member of the domain, however the user does have a user account in the domain. The laptop is personal and the staff member dials-in to the company to browse and pull external mail.