I have been faced issue in lab for 2 days, it’s take long time then show The connection has been reset as below.
Please take a look at this lab troubleshooting guide for hints as to what might be wrong. Usually these kind of problems are due to browser extensions you’re using, or what kind of firewalls are running in the place where you’re doing the lab (say, at work, and a company firewall interferes). If you still can’t get the lab to work, send email to [email protected], and they can walk you through it.