Just today, all the sudden my Firefox can't access to Gmail. When I try to login to my Gmail, it will shows:

Corrupted Content Error 
The site at https://mail.google.com/mail/u/0/ has experienced a network protocol violation that cannot be repaired.
The page you are trying to view cannot be shown because an error in the data transmission was detected.

I have tried clear all the cache and cookies, and even start my Firefox in safe mode, I am still getting Corrupted Content Error message when I login to my Gmail account. However, I am able to access it when I open my Gmail in Firefox private window.

What causes it? How can I fix it? Or I have to switch to Chrome browser in order to use Gmail?

1 Answer 1


I just found that by using Ctrl + F5 will help to solve the problem.

  • 1
    Terrific solution. Thank you. Commented Nov 20, 2018 at 5:33
  • This has to be done every time the browser is opened, though :/
    – endolith
    Commented Mar 17, 2020 at 0:38

Not the answer you're looking for? Browse other questions tagged or ask your own question.