Same error for me as well. The Symantec Class 3 Secure Server CA - G4 is not in the chrome certificate store.
As a temporary fix, I just saved the cert to disc and imported it into chrome. You can get it here: https://knowledge.symantec.com/kb/index?page=content&actp=CROSSLINK&id=INFO2045 Advanced Settings -> Https/SSL "Manage certificates" I just hope Symantec hasn't been compromised or something... Version 53.0.2785.143 Built on Ubuntu , running on LinuxMint 17.3 (64-bit) -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to chromium-browser in Ubuntu. https://bugs.launchpad.net/bugs/1641380 Title: chromium-browser: ERR_CERTIFICATE_TRANSPARENCY_REQUIRED for Symantec certs Status in chromium-browser package in Ubuntu: Confirmed Bug description: Chromium browser in xenial no longer trusts Symantec issued certificates. See [1]. 1. https://bugs.chromium.org/p/chromium/issues/detail?id=664177 Ubuntu release: 16.04 chromium-browser: 53.0.2785.143-0ubuntu0.16.04.1.1254 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/chromium-browser/+bug/1641380/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
