Very precious addon but... not synced in beta version Bewertet mit 3 von 5 Sternen

I'm using a Thunderbird 52.0b2.
A beta version of Lightnings ( 5.4b1 ) is supposed to be available for my version of Thunderbird (see : )
But it's a mystery where to load it...
*The main goal of the Calendar Team is to synchronize the Lightning release cycle with Thunderbird*

A pity : it a little hard to remain beta tester.

The beta versions of Lightning are now included with Thunderbird, so there is no longer a need to upload them to Also, the beta functionality on is in the process of being removed. If you are still getting older Lightning versions, please try uninstalling Lightning from your profile, on the next startup it should install the one packaged with the distribution. You may also need to re-install Thunderbird Beta (without an uninstall), but the first variant should be enough.

Lightning 4.7.6 unter TB 45.6.0 und WIN 10 fehlerhaft Bewertet mit 1 von 5 Sternen

Unter den oben genannten Versionen tritt folgende Endlosschleife auf:

"Dieser Eintrag wurde kürzlich auf dem Server geändert. Durch das löschen dieses Eintrags gehen alle Änderungen auf dem Server verloren."

Auswahl zum Klicken: "Trotzdem löschen" oder "Änderungen verwerfen oder neu laden"

Beim Klicken von "Trotzdem löschen" ist das Fenster erstmal weg. Erscheint aber irgendwann mal wieder mit der gleichen Meldung.
Beim Klicken von: "Änderungen verwerfen oder neu laden" verschwindet das Fenster erst gar nicht.

Die betreffenden Termine sind im Google Kalender bereits gelöscht und wieder neu angelegt. Was aber auch keine Änderung bringt. Nur das deaktivieren des AddOn Lightning hilft gegen die Endlosschleife.

Eine Neuinstallation des AddOn Lightning brachte keine Besserung. Das Abschalten des Offlinemodus half auch nicht.
Hoffentlich wird dieser Fehler im nächsten Update bereinigt.

Lightning 4.7.6 kills Thunderbird 45.6.0 Bewertet mit 1 von 5 Sternen

I have been using Lightning for quite a while, worked well. Since the last update to 4.7.6 which was installed here on January 9, Thunderbird 45.6.0. hangs when loading e-mails. TB has to be killed via Windows. It is clearly the Lingthning ad-don, if I deactivate it (and only Lightning, all other add-ons are still active), TB works flawlessly.

CalDav sync broken with TB 45.6.0 Bewertet mit 2 von 5 Sternen

Lightning will publish events to a CalDav server, but won't receive updates made by other clients.
TB 45.6.0, Lightning 4.7.6

Doesn't work with TB 45.6.0 Bewertet mit 1 von 5 Sternen

Lightning stopped syncing my google calendar, even after removing calendar and adding again, so I removed Lightning and tried reinstalling after updating TB to 45.6.0. After I install, it tries to restart TB, but TB will not open. The process runs but the window never appears. I have tried rebooting, reinstalling, reinstalling TB with no change in outcome. To resolve, I have to open TB in safe mode, at which point Lightning is no longer found, then TB will open normally again.

dont work Bewertet mit 3 von 5 Sternen

45.5.1 version Thunder, Lightning

Please correct timezone for Turkey (Istanbul) in Lightning Bewertet mit 3 von 5 Sternen

Time in Turkey is given by UTC+03:00 year-round. This time is also called Turkey Time (TRT). The time is currently same as in the Arabia Standard Time and Moscow Time zone. Turkey Time was adopted by the Turkish government on September 8, 2016. It is also in use in the Turkish Republic of Northern Cyprus.

So, it must be:
"Asia/Istanbul": {
"latitude": "+0410100",
"longitude": "+0285800"
"Europe/Istanbul": {
"latitude": "+0410100",
"longitude": "+0285800"

We are making use of the olson timezones data, which is updated regularly. The latest development version of Lightning uses the most recent changes and should have timezones updated (slightly different probably, but the result would be the same). I agree it would be great to get timezone updates out to existing versions quicker though.

plus de défilement de l'agenda Bewertet mit 3 von 5 Sternen

Un bon agenda mais parfois un comportement étrange.
Depuis quelques jours, plus de défilement de l'agenda, qui reste bloqué sur le mois en cous. plus moyen non plus de basculer sur un autre affichage (jour, semaine, multisemaine...) .
Auriez vous une solution ? Merci

Incorporating Gmail Reminders? Bewertet mit 5 von 5 Sternen

Any chance a future release will allow users to pull in Google's new "Reminders" as well as tasks and events? That would be SUPER handy. Honestly, I'm surprised no one has asked about this yet (unless I'm looking in the wrong place?). Anyhow, great work! This add-on works great for me! Will be making a contribution as soon as "Reminders" start showing up!

Incompatibility to TB through time Bewertet mit 4 von 5 Sternen

At one time TB and Lightning were fully compatible and the last one was "included" in some way into TB. But then TB continued beeing developed (now they are distributing V 50 Beta 3) while Lightning remains incompatible to TB 49, the one I have currently installed. As long as was able to use both together, I was really happy and satisfied using them. It would be ideal to have both tools integrated (as it was for a short time) or made compatible in such a way, so that a user must not worry if he uses "automatic updates" (which was my problem). Do you have any suggestions for me until a Lightning version compatible with TB 49 appears? Thanks!

Lightning is still integrated into Thunderbird, this has not changed. If it is not the case for your installation, I'd suggest contacting support.

Needed improvements Bewertet mit 4 von 5 Sternen

I like TB a lot, been using it for years. My suggestions regarding "Snooze for" on the "Reminders" list - it should have:

1) also "weeks" on the pull-down list

2) fully customizable list of the default values above and extended to 10 or more positions

Incessant freezeup make this unuseable. Bewertet mit 1 von 5 Sternen

I agree with "I Give Up". A great tool but incessant freeze up makes it entirely unuseable. Sadly that leaves Thunderbird as only an email program not a full featured personal manager.

Diese Bewertung wurde für eine vorherige Version des Add-ons (4.7) abgegeben. 

Lightning Install tip Bewertet mit 4 von 5 Sternen

To vaid problem on MAC install both Lightning and Provider Google Calendar in order to work.

Diese Bewertung wurde für eine vorherige Version des Add-ons (4.7) abgegeben. 

Workaround Bewertet mit 1 von 5 Sternen

Oddly, it seems to work when the Lighbird addon is installed & enabled, Using Lightbird means I have an insufferable popup window for my calendar instead of tab integration, but at least I have my calendar back ...

Diese Bewertung wurde für eine vorherige Version des Add-ons (4.7) abgegeben. 

I Give Up Bewertet mit 2 von 5 Sternen

Well Thunder bird updates and Lightning stops working again.

I expect it's fixable; but I've got a desktop widget that does a decent job of linking up with google calendar, so I think I'll go with that; and return Thunderbird to just being a mail client.

Diese Bewertung wurde für eine vorherige Version des Add-ons (4.7) abgegeben. 

Top-Kalender Bewertet mit 5 von 5 Sternen

Fügt Thunderbird eine sehr gute Kalender-Funktionalität hinzu

Diese Bewertung wurde für eine vorherige Version des Add-ons (4.7) abgegeben. 

Installed without warning, and breaks Thunderbird add-ons Bewertet mit 1 von 5 Sternen

This add-on was added with a Thunderbird update without prompting me to approve. With the latest update of Thunderbird 45.1.1 one of my essential add-ons was broken. Thanks, Mozilla. Two hours of lifetime wasted while trying to detect the misbehaviour and repair addon functionality.

The solution was to disable Lightning. Do not (!) remove it because it might come back with the next update.

Mozilla staff: Stop giving me something I didn't ask for without prompting me.

Diese Bewertung wurde für eine vorherige Version des Add-ons (4.7) abgegeben. 

It would have been interesting to know which add-on Lightning has broken. Lightning is now an integral part of Thunderbird and if the few UI elements it adds are really bothersome you can still disable it.

Great Product Bewertet mit 5 von 5 Sternen

Have used it with dedicated CalDav Server as well as Google Calendar, no problems.

Diese Bewertung wurde für eine vorherige Version des Add-ons (4.7) abgegeben. 

New version seams unsigned for TB 45.1.0 Bewertet mit 4 von 5 Sternen

For some reason I cannot install the Lightning plugin because its not signed. Is there a plan to update the version so that it works with TB 45.1.0? That would be very nice because I use it daily. Thanks, Julian!

Diese Bewertung wurde für eine vorherige Version des Add-ons (4.7) abgegeben. 

Calendar data to be stored on another drive Bewertet mit 4 von 5 Sternen

I have used the software for a while now and I am very happy with it. Please provide an option to store the calendar data in a location selected by user (Thunderbird already has that facility). This will enable the users to save it regularly with other data. C drive is saved infrequently by most people and moving the Tbird profile to another location is too complicated.

Diese Bewertung wurde für eine vorherige Version des Add-ons (4.7) abgegeben. 

This is already possible, although maybe not as easy as it could be. There are two options, one would be to move your whole profile to a different drive, the other would be to use an .ics file instead of the local storage backend. The former would be preferable. Ask in support for details if you need help.