Yo, I feel your pain. The 407 error is such a headache.
One thing that worked for me was disabling the proxy entirely. If you’re on Chrome, go to Settings > System > Open proxy settings > LAN settings, and uncheck “Use a proxy server.”
If that doesn’t work, it might be your ISP. I’d give them a call and ask if they’re doing any maintenance or blocking certain sites.
Good luck, mate!
One thing that worked for me was disabling the proxy entirely. If you’re on Chrome, go to Settings > System > Open proxy settings > LAN settings, and uncheck “Use a proxy server.”
If that doesn’t work, it might be your ISP. I’d give them a call and ask if they’re doing any maintenance or blocking certain sites.
Good luck, mate!