[SSL] Add ERR_SSL_PROTOCOL_ERROR troubleshooting page#30929
Open
ngayerie wants to merge 2 commits into
Open
Conversation
New page covering: - Disabling HTTP/3 for QUIC/UDP issues - Disabling TLS 1.3 for compatibility issues - ISP and network interference (DPI, SSL inspection, content filters) - Quick checklist for common causes Addresses SPM-3552
- Rename file to err-ssl-protocol-error.mdx (matches error name convention) - Fix DashButton props (url instead of path/label) - Quote description in frontmatter - Frame disabling HTTP/3 and TLS 1.3 as diagnostic tests, not permanent fixes - Add caution about security implications of disabling TLS 1.3 - Add cross-references to other common causes (certificate activation, multi-level subdomains, cipher suites) - Replace third-party tools with Cloudflare's /cdn-cgi/trace - Change 'whitelist' to 'allowlist' - Add descriptive text before DashButton components Addresses SPM-3552
ngayerie
force-pushed
the
ngayerie/SPM-3552
branch
from
d5ff335 to
c5f31c5
Compare
baubuchon-cf
approved these changes
May 20, 2026
Contributor
baubuchon-cf
left a comment
baubuchon-cf
left a comment
There was a problem hiding this comment.
Technical review LGTM — thanks for the thorough rewrite, Nicolas. All prior feedback is addressed
- DashButton props corrected to use
url - HTTP/3 and TLS 1.3 sections reframed as diagnostic tests with proper re-enable instructions
- :::caution block added for TLS 1.3 security implications
- File renamed to err-ssl-protocol-error.mdx
- Third-party tools replaced with /cdn-cgi/trace
- "Whitelist" → "Allowlist"
- Cross-references added for other common causes
Approving from the SSL/TLS product side.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
3 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Summary
Adds a new troubleshooting page for ERR_SSL_PROTOCOL_ERROR and equivalent errors in Firefox/Safari.
Changes
/ssl/troubleshooting/connection-resets.mdxRelated
Addresses SPM-3552