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Cannot sign into Google/Gmail on updated Firefox 76

  • 2 replies
  • 2 have this problem
  • Last reply by Pertinax

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Running a 2019 Macbook Pro on Catalina 10.15.4. I take decent care of it in terms of closing applications not in use frequently, charging when battery hits 15%, and restarting it at least once a week. I had to change my default browser to Chrome throughout the schoolyear since Duo dual authentication did not work properly with Firefox. Now that I have graduated, I wanted to jump back to Firefox and updated to 76.0.1. Unfortunately, I cannot sign into any Google accounts.

I am presented with an option to select a Google account, or select add/remove additional GMail accounts, but all UI features are nonresponsive. The "next" button does nothing, selecting add or remove accounts does nothing. I have since restarted my computer, cleared all data and cache from Firefox, uninstalled and reinstalled firefox, and cannot seem to figure out what is the problem here.

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Same thing here but on Windows 10. At first I was experiencing UI problem in gmail, then realized that I could not access and connect to any other of the google apps, or to So I cleared the cookies and site data, logout, and I know I can't log back in. Rebooting the PC didn't change anything. However, everything works fine with Edge browser, and on iOS.


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I'm using Windows 10 on my PC, too. Google Mail doesn't work after upgrading to Firefox 76 but it works on my Android phone and on Google Chrome on my PC.

I tried going in to Firefox safe mode but that didn't make any difference.


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