Packet Tracer login and 404 error loop

[HecPer]

Hi. I signed up at Cisco Networking Academy, dowloaded Packet Tracer(PT) and it's stuck in this login and 404 error screen loop.

At the login screen, I click on Networking Academy, change the option to on for Keep me logged in, enter my credentials and it ends up at a 404 error page.

After closing that page, back at Packet Tracer(PT), I get an authentication failed message:
Login failed. Cisco Packet Tracer is shutting down.

Then PT closes down, but during all this steps, PT seems to be running as I see the Realtime timer running.
Any suggestions to get around this are greatly appreciated. I looked at all the board options and this one made the most sense to post on.  Thanks.

[Devaa]

Update your browser and try with different browsers as default browser. 

[HecPer · Accepted solution]

The only solution I found was to turn off the network interfaces, open Packet Tracer, then turning network interfaces back on.

Found on a Youtube video.