After publishing my application in the VM’s IIS, I added the IP address in the hosts file, added port 81 to inbound rules. However, when I try to open the website outside of the VM and my pc, I get ERR_CONNECTION_REFUSED issue when I try to open the website to other PC’s (those machines at work).
How can I fix the error? 

my asp.net application worked well, and so I left that tab and did some other task for hours, then I came back to my asp.net application tab and refreshed it, but no response only continuously loads and this request has been recorded on logfiles of server with success state 200 but it does not show any result or error in my webpage, so I closed the tab and browsed my application from other tab and it again loads continuously without showing any result and this later request is not recorded on the log files of server. I have browsed the same request in multiple browsers after clearing the cache still same result of loading without response. So then i recycled my application pool that contains my application, then it works normally and suddenly all the requests that I have made before recycle are logged into server logfiles with success status code 200 with time taken of time between request made and recycling event. What is this issue? how can i avoid this? how to find out the issue? Is this happens really due to recycling of application pool in my server or some other reason?