I've checked both the option. default websites are binded to port 80 and i've also removed the SSL required check. Still the same issue.

I've to publish a webpag on http port on the CAS/Hub Server but is it not working. When I telnet the port 80 it works but when I type http://localhost it doens't show any page on the other side it does on the 443 port. I've another CAS/HUB and it works fine with both http://localhost on 80 and 443 ports. any idea what could be wrong with the first server?

Is it binded to the CAS IP Address? If yes, then try removing it and put in "all unassigned" (I have seen this happen on OCS more than Exchange).

finally figured it out and fixed. thank you guys for the prompt reply. here is the link - http://www.adnanrafik.com/blog/?p=407

Can you check in IIS for the binding settings 1. IIS manager 2. Expand Sites 3. Click on Default Web Site 4. Actions pane click on Binding Check if http is assign to port 80. If no, then manually add port 80 and assign to the IP Address of the CAS.

Hi Vminstrator, Above gave some good suggestion. Any update for your issue? Which version exchange do you use, and which version IIS? Please also confirm that whether the access requiring the SSL method. Regards! Gavin TechNet Subscriber Support in forum If you have any feedback on our support, please contact tngfb@microsoft.com Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.