Summary

Cloudflare's SSL validation failed because the originating server did not possess a valid and current digital certificate, preventing the user from accessing the site securely despite Cloudflare verifying the client's connection. The error indicates that while the traffic was routed through Cloudflare, the root cause lies in the infrastructure itself; it suggests the origin server was using an outdated or expired SSL certificate that no longer meets the strict security protocols required by modern standards, causing a critical authentication failure for all users attempting to connect.

Title

arena.brussels | 526: Invalid SSL certificate

Description

arena.brussels | 526: Invalid SSL certificate

Categories

Technology

NS Lookup

A 172.67.152.176, A 104.21.72.158

Dates

Created 2026-04-11

Updated 2026-10-26

Summarized 2026-10-28