Clients receives error 691 trying to connect to ISA Server 2006 as VPN Server

Yikes! Not another 691 error on a VPN client connecting to the ISA firewall. What’s the cause this time?

image

If you look at the error, you’ll think the problem is an authentication issue, since that what the dialog box says it is 🙂

Yuri Diogenes goes into deep detail in how to troubleshoot these kind of issues in his article over at https://blogs.technet.com/isablog/archive/2009/03/19/clients-receives-error-691-trying-to-connect-to-isa-server-2006-as-vpn-server.aspx

Make sure to have a strong cup of coffee before reading this – it’s a very deep dive.

Enjoy!

Tom

Thomas W Shinder, M.D., MCSE
Sr. Consultant / Technical Writer

image
Prowess Consulting www.prowessconsulting.com

PROWESS CONSULTING | Microsoft Forefront Security Specialist
Email: [email protected]
MVP — Forefront Edge Security (ISA/TMG/IAG)

Leave a Comment

Your email address will not be published.

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Scroll to Top