I have already registered on netacad and it's just that when I open packet tracer the user login page does not show up, it's just blank.
I have the same problem as you. I really need to fix it right now because I am a computer science student and I am using is with my subject. So, do you fix that? Can you give me some advice, thanks
I had a blank login page when I was connected to my corporate VPN. When I dropped the VPN and was directly connected to the Internet, I did not have this problem.
Try using an Internet connection for initial registration
I had the same issue when I tried using Packet Tracer for the first time from my company's intranet. I brought my laptop home and was able to successfully log in from my Internet connection. Now that I've logged in, I'm able to use Packet Tracer along with my company's VPN. So it looks like there's a one-time login step that won't work through (at least my company's) intranet. Note that while on the intranet I did try setting the proxy settings and that didn't solve the issue.
Seems like a firewall issue, not related to Java or OS, I logged off my VPN for a minute, the login screen was showing fine, the minute I logged back to VPN, I was getting the same screen