Could an outdated TLS version on the origin server cause a 526 error?

By: USER3847
23 Agustus 2025 Support 5 minutes
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Question

Grade: Education Subject: Support
Could an outdated TLS version on the origin server cause a 526 error?
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Yes, an outdated TLS version on your origin server can cause a 526 error. Cloudflare enforces a minimum TLS version for security reasons. If your origin server only supports older, insecure TLS versions (like TLS 1.0 or 1.1), the handshake will fail. Upgrade your origin server to support TLS 1.2 or 1.3.
Answered on 23 Agustus 2025

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