Google Calendars

For discussing the Mozilla Calendar, Sunbird and Lightning projects.
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Joined: June 19th, 2008, 8:21 am

Post Posted May 18th, 2017, 6:07 am

For several years I have successfully used my Google Calendar in Thunderbird, now all of sudden as of this morning, I can no longer display the calendar. Well actually the calendar is shown in the left column but none of the events are displayed. I deleted the calendar from the left window and tried a re-install but the calendar doesn't show up in the list of google calendars available. I can see the calendar using Firefox, but Thunderbird doesn't seem to be able to locate it.

I have re-installed the plugin and have the most current one.

Has Google done something that is a result of the recent problems and in the process broken the calendar export function?



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Post Posted May 18th, 2017, 6:09 am

Moving to Calendar forum.

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Joined: June 19th, 2008, 8:21 am

Post Posted May 18th, 2017, 6:18 am

DanRaisch wrote:Moving to Calendar forum.

Sorry, didn't see a Calendar forum. Thank you.

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Joined: February 12th, 2005, 8:33 pm

Post Posted May 18th, 2017, 9:52 am

Just to double-check, first use the web interface to see that indeed, your calendar is still live and accessible.

I'm also assuming that, as you said, you have the appropriate version of Lightning (no problem if it says, in the description "an integrated calendar for Thunderbird") and the latest version of "Provider for Google Calendar" (v. 3.3).

Then, back to Thunderbird / Lightning, Google had "improved" their sing-in dialog box about 1 week ago. Don't ask me why, but it didn't change anything for one of my gmail accounts... and disconnected the other one. Go figure! The solution is to remove the saved password from Thunderbird and to force Thunderbird to ask it again.

Here is how to do it.

0. Do a copy of your profile, just in case. Better be safe than sorry!

1. First, if you have any special configuration (name, colour of each of your Google calendars), please note them as they may disappear in the process.

2. Press ALT to display the menu bar, then Tools –> Options. Select "Security" and click on "Registered passwords"

3. In that window, enter an appropriate search string (ex.:
Amongst the connection lines, search for the following (I think) : (Google Calendar OAuth Token)
Delete it.
(Worst case scenario, delete anything that is not labeled imap and smtp; but you might have also to reenter your password for Gmail too).

4. Quit Thunderbird and restart.

5. Either one of these two things will happen (and I have seen both). You will either see that:
– you will simply need to reenter your password and all Google calendars will be accessible, or,
– all your Google calendars will disappear; you will have to reconnect to them one by one. Obviously, as they are on Google, all the information will reappear within a few minutes.
Michel Gagnon
Montréal (Québec, Canada)

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