Cannot add Gmail email account or calendar - sign-in prompt page does not load
On Mac Sonoma 14.4, Thunderbird 115.12.2
When I try add my Gmail account or calendar account, the Gmail sign-in prompt page comes up but is entirely blank and does not load. When I restart my laptop I can sometimes get the page to load but when I allow my account to be connected, the next page does not load still. So the authentication process does not finish. The result is the same whether I enter my password on Thunderbird or not.
I have uninstalled and reinstalled Thunderbird, and downgraded to an older version. Same issue.
I am not sure if it is a Mac issue but I am only having the issue with Thunderbird.