Gmail Security – Cannot Connect to the Real Gmail.com

gmailgoogle-chromehttpsSecuritywindows 7

Dunno what happened, but suddenly I cannot connect to Gmail from Chrome on this computer:

Gmail error on chrome

Under "more" it says:

What does this mean?

gmail.com normally uses encryption (SSL) to protect your information. When Chrome tried to connect to gmail.com this time, gmail.com returned unusual and incorrect credentials. Either an attacker is trying to pretend to be gmail.com, or a Wi-Fi login screen has interrupted the connection. Your information is still secure because Chrome stopped the connection before any data was exchanged.

Network errors and attacks are usually temporary, so this page will probably work later. You can also try switching to another network.

Technical details

gmail.com has asked Chrome to block any certificates with errors, but the certificate that Chrome received during this connection attempt has an error.
Error type: HSTS failure
Subject: mail.google.com
Issuer: ESET SSL Filter CA
Public key hashes: sha1/LBVQpu3n4BwHoMqkrzfLxLsSnbI= sha256/RHmN1dbh3iUcYQqF0J9erDGWqz99PVYM//CxbUMbNbQ= sha1/WHrFP5oe9qirobGMRlG4wsHOHCI= sha256/leyNwItyakk42FEChQ4D3qwQ5FZvJorBZDZykIFzolY=

This only happens on Chrome; I get to the login screen with no problem on IE 11. And it's only happening on gmail; I can get to other Https sites on Chrome without getting this warning.

What is the problem? How to fix it?

Best Answer

Looks like Chrome doesn't appreciate what your ESET security software is trying to do (i.e., MITM'ing its connection).

You might try disabling ESET's SSL scanning.

If you're not running ESET, then you have more serious problems...

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