Tech article
X25519-only TLS ends for GHE.com on October 7
Publisher description: Beginning October 7, 2026, GitHub Enterprise Cloud with data residency will no longer accept TLS connections from clients that offer only X25519 for key agreement.
github | Sep 30, 2026 | Allison
Automated excerpt
Beginning October 7, 2026, GitHub Enterprise Cloud with data residency will no longer accept TLS connections from clients that offer only X25519 for key agreement. Current browsers, operating systems, GitHub CLI releases, and commonly used TLS libraries already support P-256. If you need help validating your TLS configuration, contact GitHub Support.
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