Rated 3 out of 5 stars

Geht nicht mehr. (Tb, Lightning, Windows je neuste Version). Kalender nach löschen neu anlegen geht auch nicht mehr. Hat bis Version 0.3x klaglos seinen Dienst versehen, Dank an die Entwickler. Nachdem v1.0 nicht funktionierte hätte ich erwartet, dass v1.01 vor Veröffentlichung besser getestet würde. Bin zu v0.32 zurück gewechselt.

This review is for a previous version of the add-on (1.0.1). 

Rated 5 out of 5 stars

I am relying on this add-on on multiple machines. Thanks for how well it did until recently.

Donating $10 to express my gratitude and my hopes for a quick fix.

This review is for a previous version of the add-on (1.0.1). 

Rated 1 out of 5 stars

Warum funktioniert die Offline Unterstützung nicht mehr? Das ist bei Laptops doch recht wichtig.

This review is for a previous version of the add-on (1.0.1). 

Rated 3 out of 5 stars

Having some trouble since the update. Got it working by deleting and re-adding calendars, but since latest update of Thunderbird it shows calendars momentarily not available. Working on that.

This review is for a previous version of the add-on (1.0.1). 

Rated 5 out of 5 stars

I've experienced the same issues reported here... But we have about 35 pc and 50 users, with about 12 calendar shared... It was an it is a nightmare!!!

This review is for a previous version of the add-on (1.0.1). 

Rated 5 out of 5 stars

The rating's for the smooth performance of this add-in over the years. The latest versions (1.0 and 1.0.1) are having problems related to the add-in's request quota and OAuth. I expect those'll be resolved soon. This is the first glitch I've seen in several years, which is a welcome change from a lot of software out there.

This review is for a previous version of the add-on (1.0.1). 

Rated 5 out of 5 stars

The 5 stars are for the old version that worked smoothly for years. I'm experiencing the same issues others have reported, but I haven't tried to downgrade to 0.32 yet. I can still access my Google calendar in a browser tab and via my phone, so I'll just wait until this gets sorted.

I also (finally) donated to Philipp for all the work he's done on this. If you've been using it happily as well and have never donated, this might be one of the best times to actually do it.

EDIT: Aleksandr, the remove/re-add fix worked about 24 hours ago, but it no longer works now for many of us on Windows. We've tried repeatedly and all we get is a blank screen instead of a list of calendars to choose from.

This review is for a previous version of the add-on (1.0.1). 

Rated 1 out of 5 stars

First off, big thanks to the developer for creating this addon and trying to maintain it. I'm sure it can be a thankless job.

I use several Google calendars and .32 has been plugging away fine for years. But I have had a lot of problems with the latest version (1.0.1) since I installed it. I thought I had a fix; it worked for a day or two or more, then broke again.

I am just thankful that .32 is still available. I just reinstalled it and things are working again. I'm keeping my fingers crossed.

This review is for a previous version of the add-on (1.0.1). 

Rated 1 out of 5 stars

This was an awesome add-on until it upgraded. I know better than allow things to upgrade automatically (I'm a Windows user!), but I didn't think to change the default here. I had to reboot my computer today, and when I opened Thunderbird up again I got some noticed about what calendar I wanted to use. I didn't think much of it until I flipped over to the calendar tab and it was empty. Nothing I tried to get them to resync worked; I finally had to use one of the work-arounds here.

This review is for a previous version of the add-on (1.0.1). 

Rated 1 out of 5 stars

Has stopped working since version 1.0.1 on Thunderbird 31.1.x and 31.2.0. Even 1.0 worked better, despite some hickups.

Recommend going back to version 0.32 which still works great.

This review is for a previous version of the add-on (1.0.1). 

Rated 1 out of 5 stars

Up 'til now this has been a fairly robust and stable add-in. With Thunderbird 31 upgrade and the upgrade to 1.0.1 of this plugin it becomes incredibly buggy. The new version adds a login requirement and an authentication to allow the plug in to manage the Google calendar. At least in the case of using multiple computers, this causes the software to report errors, such as "too many connections" and to pop reminders which cannot be dismissed, ultimately disconnecting the calendar. Wait for the bugs to be fixed.

This review is for a previous version of the add-on (1.0.1). 

Rated 4 out of 5 stars

kudos to the devel for a great addon! We've been using this successfully for over a year. I can confirm that latest version causes thunderbird to freeze on our linux ltsp system, but this was caused by an abrupt change in google's api and a complete overhaul by the devel to the addon. Once the bugs are ironed out, I'm sure it will be as great as ever. Until then, I can confirm that Brian and Brunoc68's suggestion to re-install prior versions for now works perfectly on our linux-ltsp system (several users with several privately "shared" google calendars).

One note ... be sure to use the .25 and not the .32 version if your thunderbird is version 24 or earlier! I noticed some reviewers indicating that they tried the .32 version and I tried that, even so far as to crack it open and change the minimum thunderbird version to 24 instead of 25 (linux deb repository offers thunderbird version 24), but it kicks out a "corrupt file" error on install. However, version .25 still works fine without the necessity of changing the addon in any way.

This review is for a previous version of the add-on (1.0.1). 

Rated 3 out of 5 stars

I have been having problems in the latest version as well. I have 2 GMail accounts with calendars. My personal account seems to be working fine. I also have a business account that is managed by my company and uses Gmail/Google for everything. This is a more limited account and this is the one with issues. Since updating it has added reminders to a bunch of events that didn't have reminders before. This would be great but it's causing all sorts of problems. After installation I got notifications for 50+ past events it added reminders to. 3 of these event reminders could not be dismissed. Whenever I tried clicking the Dismiss button, either next to the event or the Dismiss All nothing would happen. If I view the calendr in Thunderbird I see a yellow exclamation point icon next to the calendar. If I mouse over that it says "The calendar XYZ is momentarily no available", or something like that. I tried deleting the past events directly in Google and re-creating the calendars in Thunderbird but the reminders still showed up. I tried clearing all saved passwords and flushing the cache, but it still showed up. Nothing worked. What else is odd is that when adding the calendar I see the "please choose a session" dialog box. The only active session listed was my personal Gmail, even though I had my business account and was getting email for it. It's like it can't communicate with anything but a personal level Gmail account.

Last night I tried completely deleting all addons and re-installing them. However, since then, I can't install the Provider for Google Calendar. Was it taken down due to these issues? I can still download it from the site but the Thunderbird add-on manager can't get it.

Anyway, like others, I have chosen to downgrade to 0.32 until these issues are resolved. Hopefully they will be soon. It looks like a lot of nice features have been added, but it has to work to be usable.

This review is for a previous version of the add-on (1.0.1). 

Rated 1 out of 5 stars

This last update simply does not work : please remove it immediately so that the current users are not automatically updated. The previous version was excellent !

The upgrade changed url of the existing set-up calendars to comply with googleapi ; therefore when going back to previous version of the extension the url of the calendars were wrong and they could not be seen.

The only solution was to :
1. delete all calendars
2. downgrade to previous version of the addon
3. disable automatic updates (whether this really work I am not sure : I always do that and still I got the update)
4. configure the calendars again with the older url format

I confirm the above worked fine with several calendars.

This review is for a previous version of the add-on (1.0.1). 

Rated 1 out of 5 stars

dal 14.10.2014 non funziona più!

This review is for a previous version of the add-on (1.0.1). 

Rated 5 out of 5 stars

Same as Igor and Ries, I have downgraded for now until issues are worked out.

Downgrade:
* Make sure to backup you calendars, I recommend backing up from both Thunderbird and the Google web interface.
* Delete Google calendar(s) from Thunderbird and remove the current version of the add-on
* Install version 0.32 from https://addons.mozilla.org/en-US/thunderbird/addon/provider-for-google-calendar/versions/ and make sure you disable automatic updates for thisadd-on.
* Re-add your Google Calendars (On the Network -> Google Calendar -> and use the Google's (private) XML feed url as location)
* Set a calendar item to check back at this page at a later stage to see if things are fixed and if you can enable automatic updates for it again.

I encountered several issue which lead me to the downgrade:
* First thing I noticed after the upgrade was almost 100 of my appointments were reset and causing a reminder of these old events.
* A day later I noticed I was missing many events I recently created, but they were still visible in the web interface.
* As suggested here I removed the Google calendars from Thunderbird and tried to re-add them, but this lead to more problems.
* When I tried to add a new Google Calendar to Thunderbird I was presented with a blank page in the wizard window, preventing me from adding any Google Calendar at all. It seems this was caused by the Google birthdays add-on which somebody else mentioned is incompatible (and unneeded) with the new version of this add-on. After disabling the Google Birthdays add-on this issue was solved.And my calendar was working...
* ...until today. Today a yellow exclamation mark showed up next to my Google Calendars telling me these calendars were unavailable. I could still see the events on them, but unable to make any changes.

Running this on my main machine it isn't worth it to deal with the problems while trying to get work done. The older version works fine for now. Although I do hope the issues will be resolved eventually. This seems to a big update after a long time, good to see development hasn't stopped.

This review is for a previous version of the add-on (1.0.1). 

Rated 5 out of 5 stars

Right method for r/w access

(as explained here https://developers.google.com/google-apps/calendar/caldav/v2/guide#connecting_to_googles_caldav_server and there https://blog.mozilla.org/calendar/2013/09/google-is-changing-the-location-url-of-their-caldav-calendars/)

is to use CalDav, with such type address :

https://apidata.googleusercontent.com/caldav/v2/calid/events

where calid is the html calendar address of that shape :

a1z2e3r4t5y6u7i8o9%40group.calendar.google.com

(at least for the moment)

This review is for a previous version of the add-on (1.0.1). 

Rated 5 out of 5 stars

You could also use CalDAV to sync the calendar with google calendars.

https://blog.mozilla.org/calendar/2013/09/google-is-changing-the-location-url-of-their-caldav-calendars/

Just follow that instructions, login, and it's working. (Bidirectional sync, not just for downloading, but be sure to pick the right calendar when creating events).

This review is for a previous version of the add-on (1.0.1). 

Rated 4 out of 5 stars

Igor is right. Version 1.0.1 doesn't do the job, version 0.32 still works!

This review is for a previous version of the add-on (1.0.1). 

Rated 4 out of 5 stars

After today's update of this add no longer synchronize Google calendars.
I updated Thunderbird to the latest version and I have reinstalled the plugin, without success.
Please solve the problem.
Thank you.

This review is for a previous version of the add-on (1.0.1).