Sudden SSL Error for github pages custom domain website

📰 Reddit r/webdev

Fix sudden SSL errors on GitHub Pages custom domain websites by checking DNS records and SSL certificates

intermediate Published 1 Jul 2026

Action Steps

Check DNS records for correctness and consistency using Cloudflare DNS manager
Verify SSL certificate status and expiration dates using SSL checker tools
Test website accessibility using online tools like SSL Labs or Why No Padlock
Update DNS records and SSL certificates as needed to resolve errors
Contact GitHub Support or Cloudflare Support for further assistance if issues persist

Who Needs to Know This

Web developers and DevOps teams can benefit from this solution to resolve SSL errors on custom domain websites hosted on GitHub Pages

Key Insight

💡 SSL errors on GitHub Pages custom domains can be caused by incorrect DNS records or expired SSL certificates

Key Takeaways

Fix sudden SSL errors on GitHub Pages custom domain websites by checking DNS records and SSL certificates

Full Article

Hi, I am currently developing and hosting a website on github pages. I purchased a domain and set up the proper DNS records linking it back to github servers (4 A records with the apex domain, 1 CNAME for the www . subdomain), using cloudflare (unproxied). I set my custom domain in the pages tab and enforced https. This was working completely fine for a week until I tried to visit my site an hour or more ago and I get this (2 days now at

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