I am trying to migrate off of Google, email, and most importantly - *Calendar (with tasks)* {I just got stung by Proton who's calendar does not include any tasks, only events. Thus my Google calendar cannot import 75% of the data correctly.} I had started with an Offline version of Thunderbird, refusing to integrate with Google. I was thinking I could import later, and not have to connect to Google to do so. I was very wrong, it turns out you cannot export the calendar and tasks file from Google via download, and then import said data to the Offline Thunderbird on my PC. I could not figure out how to go back and connect Google to my Thunderbird. After banging my head for many hours on text walls that did not give the helps I needed... It did tell me how to import files to Thunderbird, but the .zip file from Google does not worky. I tried all options with no dice. I gave up, and uninstalled Thunderbird, and re-installed it - hoping to get the option to install it with google integrated this time. It remembers all my settings from the Offline installation. Still contemplating taking Thunderbird off the machine and do a registry hunt to kill all entries of TB. I will try that in a bit. Ok, so How can I set it up to work with google to get my Calendar, with tasks included into Thunderbird? Keep in mind I plan to break the Google connection once it is fully imported, for security purposes. And, before people copy/paste the FAQ at me, I did do the steps, several times, and several ways, none of which resolved the situation.