I'm running windows 10. I used to use github just fine and I'm not sure what changed, but I can't access the site in any way. I can't browse it. I can't use github tools. I've tried http and https. It all times out.
All other https sites work fine. All other sites that I can find in general work fine. It's just me and Github not getting along.
I beseech thee, code gurus, help me get back to work.
I've tried setting myself in the DMZ of my router and turning off the firewall, to no effect.
For future reference, the issue may have been with GitHub itself. If you go to https://www.githubstatus.com/ you can get the real time status for all GitHub services.
I only found this today because I had the same issue you described here. Turns out, it's because of an outage on GitHub's end.