Hello Dropa, As mentioned in previous post before me (https://support.mozilla.org/en-US/questions/1348430) clearing the cache or history or disabling the add-ons do not work to solve the problem. Any other suggestions?

This could be a problem with the TLS 1.3 Early Data feature also known as Zero Round Trip Time Resumption (0rtt). You can try to set security.tls.enable_0rtt_data = false on the about:config page to disable this feature until this is fixed by Google or Mozilla to see if that helps.

See also:

• /questions/1376015 Issue with most Google sites on Firefox v100 64bit

Dear Cor-el, I really apprecite your help... It works perfectly now, after I applied what you have suggested... Thanks a lot!

Here is what I did ( for the ones having the same problem ) Opened a firefox browser and typed "about:config" on the address bar clicked on the "except the risks" button to display further settings Then pasted "security.tls.enable_0rtt_data" in the search bar and set it as "false"

Hope this clarifies even further...