I was having trouble with that yesterday, as well. On the settings page for my repository, I switched from www.example.com to example.com and then back again to

I was having trouble with that yesterday, as well. On the settings page for my repository, I switched from www.example.com to example.com and then back again to www.example.com. I noticed it is now working for my site, though I don't know for sure that my changes fixed it. https://help.github.com/articles/troubleshooting-custom-domains/#https-errors https://help.github.com/articles/troubleshooting-custom-doma...