Cloudflare + Blogger SSL Issue: What Broke My Site and How I Fixed It
Date: Yesterday
Yesterday my website suddenly stopped loading. It was working perfectly the day before, but when I tried to open it again, I was greeted with a Cloudflare error page showing:
Browser: Working
Cloudflare: Working
Host (Blogger): Error
This post documents what happened, what I tried, and the exact fix that finally solved the issue.
The Setup
- Platform: Google Blogger (Blogspot)
- DNS & CDN: Cloudflare
- Custom domain connected to Blogger
The site had been running normally until the SSL error appeared without any changes on my side.
What I Tried First
Initially, I assumed this was a certificate expiration or server issue. However, since Blogger is fully managed by Google, I quickly realized:
Everything on the backend is handled by Google.
Changing Cloudflare’s SSL mode produced interesting results:
Full (strict)❌ — Site down (Error 525)Full❌ — Still unstableFlexible✅ — Site worked
At first, this looked like a solution — but Flexible SSL is not recommended and can cause security and SEO issues.
The Real Root Cause
After deeper inspection, the real issue turned out to be Cloudflare proxying Blogger traffic.
Cloudflare tries to establish its own SSL connection to the origin. Google Blogger does not support:
- Cloudflare Origin Certificates
- Strict SSL validation from third-party proxies
This caused the SSL handshake to fail.
The Fix That Actually Worked
Once I changed the DNS proxy status from Proxied (orange cloud) to DNS only (grey cloud), the site immediately started working again.
This allows:
- Direct HTTPS connection between visitors and Google Blogger
- Google-managed SSL certificates to work correctly
- No SSL interference from Cloudflare
Final Working Configuration
- Cloudflare DNS: Grey cloud (DNS only)
- Blogger HTTPS: Enabled
- Cloudflare SSL mode: Irrelevant (not used)
Cloudflare proxying is not compatible with Google Blogger SSL in a reliable way.
Lessons Learned
- Blogger already provides HTTPS — do not try to “enhance” it
- Flexible SSL is a workaround, not a solution
- Grey cloud DNS is the safest and most stable setup for Blogger

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