Error when running a web-based application

Hi,
I tried to run a web-based application when this error message popped up on my screen (see below for the screenshot).
I checked my connection to the internet, and it seemed fine.
I didn’t know which server the message is referring to. I have searched the web, but I couldn’t find any resolution.
Kindly help me resolve this problem.
Thanks.

Message – Web Page dialog
Cannot communicate with the server
