This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

After upgrade of Thunderbird to 78.5.1, no calendar events are listed.

  • 5 replies
  • 1 has this problem
  • 1 view
  • Last reply by sfhowes

more options

I just upgraded to version 78.5.1 of Thunderbird. When it opens, my calendar tab is blank. Each of the entries in my Calendar List in the left-hand column has a button prompting me to enable it. I have done so and tried to synchronize Calendar but no events are displayed.

If I close and reopen Thunderbird, the calendar shows no events, and the Calendar List in the left-hand column again has the Enable button next to each entry.

See the attached image.

How can I fix this?

I just upgraded to version 78.5.1 of Thunderbird. When it opens, my calendar tab is blank. Each of the entries in my Calendar List in the left-hand column has a button prompting me to enable it. I have done so and tried to synchronize Calendar but no events are displayed. If I close and reopen Thunderbird, the calendar shows no events, and the Calendar List in the left-hand column again has the Enable button next to each entry. See the attached image. How can I fix this?
Attached screenshots

All Replies (5)

more options

Using the Provider add-on? Try removing the add-on, restart TB, install the add-on.

https://github.com/kewisch/gdata-provider/issues/133

more options

I uninstalled and reinstalled the Provider for Google Calendar add-on and that corrected the issue.

Modified by grandpalarry777

more options

Uninstalling and reinstalling the Provider for Google Calendar add-on initially worked but after closing and reopening Thunderbird once again no calendar events are displayed.

I tried the uninstall/reinstall process a few more times but no events are shown.

Any other ideas?

Thanks.

Modified by grandpalarry777

more options

If the Provider add-on isn't working, try TbSync/Provider for CalDAV & CardDAV, or add the calendar without add-ons:

https://support.mozilla.org/en-US/questions/1304356#answer-1368791