good but it nees some improvements Rated 3 out of 5 stars

Good!!!! But ...
I cant' use the copy and paste option, it doesen't word.
Everytime i open Thunderbird i have to login again. Save login data does not work.

Needs update.... Rated 3 out of 5 stars

Everytime i open Thunderbird i have to login again. Save login data does not work. Next time i start TB i have to login again. Any advice to prevent this?

Perfect - thanks Rated 5 out of 5 stars

Seamless access to my Google calendar. Perfect - thanks

Excellent Add-on! Rated 5 out of 5 stars

Exactly what I was looking for. Works quickly and wonderfully. Thanks for creating the tab. A donation is on its way!!!

Does not work since 2 months Rated 3 out of 5 stars

It was a great tool but since 2 months, I have the message "demande incorrecte" (bad request).
I have cleared all the cache, uninstall, install again but always this message

Cannot change default Google Calendar account Rated 5 out of 5 stars

I have two gmail accounts, one personal and one for work. I accidentally logged into the wrong account, now it won't let me change it. If I try to log out or change the account, it opens up a link in my default browser, but doesn't let me change it within Thunderbird. Uninstalling and reinstalling did not help, it keeps the same login info. Would be 5 stars if I could log in to the correct account.

EDIT: SOLVED by clearing the cache. Tools>Clear Recent History> Time Range to Clear: Everything.

Rated 3 out of 5 stars

Works great once I am logged in. For some reason EVERY time I open Thunderbird I have to log in to the calendar with the name AND password.

Appears to be Source of Not Responding Issues Rated 2 out of 5 stars

When this add-on works it's terrific. Since the advent of Thunderbird 38.0.0 in particular, however, it appears Google Calendar Tab is the source of the frequent "Not Responding" messages and delays I've been experiencing. If this annoyance can be remedied I'll happily boost my rating. Thanks in advance for checking into its performance and making the fix.

This user has 2 previous reviews of this add-on.

Great add-on - And works with Sunrise Rated 4 out of 5 stars

This was a good add-on when I discovered it. Worked perfectly with google calendar and what not. It gave me always on access to my calendar post divorcing myself from the evil Outlook.

BUT THEN OMG AT 3AM I JUST THOUGHT WHAT HAPPENS IF i POINT IT AT SUNRISE WEB INTERFACE IN THE OPTIONS ?

WORKS PERFECTLY AS WELL !

Rated 5 out of 5 stars

very good...

How to switch calendar from agenda view to week view Rated 5 out of 5 stars

I recently installed the Google Calendar add on and I also noticed that IT WOULD ONLY DISPLAY THE AGENDA VIEW (as other reviews have previously stated). I fixed this (on Linux) by editing "~/.thunderbird/locymkyh.default/session.json" and changing:

"tabURI":"https://www.google.com/calendar/m","clickHandler"

to

"tabURI":"https://www.google.com/calendar/render??#g%7Cweek-2+22889+22895+22892","clickHandler"

NOTE: The '/locymkyh.default/' part of the path is uniquely generated for each user profile so yours will be different. Use the following command in a terminal to see yours:

find ~/.thunderbird -type d -iname '*.default'

Also, I don't know what "week-2+22889+22895+22892" means to google, but I don't think it matters. This change should at least get Google Calendar to switch from the mobile agenda view to the desktop week view. If you have problems then try removing "-2+22889+22895+22892". With and without the numbers worked for me.

Rated 5 out of 5 stars

Great add-on.
IMPROVEMENT suggestion:
Tasks are not showing up in Google Calendar when launched from Thunderbird.
From any browser it is showing up fine.

Rated 2 out of 5 stars

When using Google 2-step verification in the screen where you enter the google verification code there's a box to click that says "Don't ask for codes again on this computer", which does nothing. I get a code, enter it, and try to make is so I don't ever have to enter a code again and wallah, it fails. I have application specific passwords that this addon won't use at all so I rate this addon a 2 star.

Escaped Lightning, But... Rated 4 out of 5 stars

I just spent three days trying to get Lightning to show anything at all, gave up, looked around and found this – my calendar appeared right after the restart! But count me in as another plea for adding Google Tasks... that would make it five stars for sure.

Update: Google Tasks Sync shows tasks in my email tab, but no in the calendar tab. That helps, but...

Rated 1 out of 5 stars

Won't let me change accounts. When I click "sign in with a different user" it launches into a browser window (outside of TBird) There seems to be no way to get it to use another account. Other than that, it works fine.

very nice but something changed Rated 5 out of 5 stars

I am a very happy user of this addon, thank to this guy.Just one thing is still broken:I have managed three email adresses on thunderbird, with three google calendars as well but after these days, once I open one calendar account, if I try to add a new one (calendar account), it goes to the browser instead opening a new tab.
If you could fix it would be great indeed.
Thanks

Rated 4 out of 5 stars

Anyone stuck on the Mobile view:

This appears to be just a cookie issue. Try logging out, then logging back in; this fixed it for me. and it's now working beautifully again.

How it works again Rated 5 out of 5 stars

If you're stuck with the mobile calendar version, do the following:
Go to Add-ons Manager -> Google Calendar Tab -> Preferences and add the custom URL: https://www.google.com/calendar/render
It now should work again!

Rated 1 out of 5 stars

Used to work great, then as other reviewers noted, went to Agenda view without a way of reverting to Week view.

Rated 3 out of 5 stars

Used to work great but recently only shows mobile view of calendar :(

Edit: ThunderCal still works - https://addons.mozilla.org/en-us/thunderbird/addon/thundercal/