Remote computers don't accept 80-port connections, which means that the content you want to access must be accessed through a specific port, and more than 80 self-designed ports set by the server on the firewall can't pass.

Solution:

Disable all antivirus software and firewalls (including Windows).

Your network operator has set up this function, you can consult customer service to solve it.

To disable the firewall:

Click the Start button on the leftmost side of the desktop taskbar of win7 system, and select the control panel.

Select System and Security Open to proceed to the next step.

Select the windows firewall to open.

Click the windows Firewall on or off option.

Select to turn off the windows Firewall in the home or work (private) network location settings and public network location settings options.