Yes, I have read all other articles regarding Thunder issue, none of those suggestions helped.
Yes, I installed Thunder for the specific site I am trying to connect to.
Yes, I downloaded the latest version of Thunder.
This is happening on a local 10.0.6411.0 site in IIS on Windows 10 and VS 2012. The site works fine in IIS but I cannot connect Thunder. As soon as I enter the site URL I am getting the "Error occurred while connecting to the server." error. I never had this issue with the previous versions of Sitefinitys I installed locally.
The Username/Pass combination is correct and I don't think Thunder is even checking the User/pass, as I mentioned, I am also getting the error message upon entering the site URL, it is a fake domain name that I set up by editing the host file and configuring the IIS bindings, same process that always worked in the past (screenshot attached).
What am I missing? Please advise.