I'm running websense + Forefront TMG. Up until 2 weeks ago, facebook hasn't been working properly. The sign in page loads up fine but as soon as I'm logged in, I get "Internet Explorer cannot display the webpage", this problem can be caused.......etc.
I've posted a question on Websense forums and someone suggested this article
Now I have a feeling the issue lies with Forefront. I need to configure Forefront the way that https traffic works properly. I've never had any issues in the past with https but it looks like this is now the issue.
Can anyone please advise?
are you using Forefront TMG HTTPS inspection? If yes try to add the Facebook websites to the destination exceptions in the HTTPS inspection settings
regards Marc Grote aka Jens Baier - www.it-training-grote.de - www.forefront-tmg.de - www.nt-faq.de
Thank you for the post.
To narrow down this issue, you may try to disable websense filter on TMG server and see if it works. If the issue still retains, please check live logging if there is any error message when you create access rule to allow http/https protocols from internal to external for all users.
Nick Gu - MSFT
- Proposed as answer by Nick Gu - MSFTMicrosoft contingent staff, Moderator Friday, December 14, 2012 4:47 PM
Thanks for your reply. I found a solution. It turned out to be compatibility issue with IE8. I had to apply KB971930 and added facebook.com to compatibility view settings.
Edited: Okay, this solution worked for the whole of last week and now it's happening again. This is weird. I'll keep digging.