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

Thunderbird Calendar & Events - version 91 upgrade issues

  • 2 majibu
  • 1 ana tatizo hili
  • 1 view
  • Last reply by wrexmobile

more options

I had Thunderbird set to auto update on my Windows 10 desktop and it updated to v91 at which point all the data in my calendar disappeared. I was able to prevent the auto update on my Windows 10 laptop and was able to also install an overnight backup of my desktop appdata\roaming\thunderbird folder there and get access to the calendar. I've tried exporting the calendar from the laptop and importing on the desktop but still cannot see any data. Many of the posts on the issue refer to Google calendars but what I'm using is the integrated calendar which I believe may be what started out as the Lightning add-on. I have tried creating new calendar events and saving those but they don;t show either. I'm not sure if the calendar reference in the developer tools output in the attached is relevant. Does anyone know if there is a solution to the problem and, if so, how is it implemented?

I had Thunderbird set to auto update on my Windows 10 desktop and it updated to v91 at which point all the data in my calendar disappeared. I was able to prevent the auto update on my Windows 10 laptop and was able to also install an overnight backup of my desktop appdata\roaming\thunderbird folder there and get access to the calendar. I've tried exporting the calendar from the laptop and importing on the desktop but still cannot see any data. Many of the posts on the issue refer to Google calendars but what I'm using is the integrated calendar which I believe may be what started out as the Lightning add-on. I have tried creating new calendar events and saving those but they don;t show either. I'm not sure if the calendar reference in the developer tools output in the attached is relevant. Does anyone know if there is a solution to the problem and, if so, how is it implemented?
Attached screenshots

Chosen solution

That sorted it. I was concerned on the initial select because it only returned 1 row but I followed the rest of the instructions and now everything is displaying. Many thanks.

Read this answer in context 👍 0

All Replies (2)

more options
more options

Suluhisho teule

That sorted it. I was concerned on the initial select because it only returned 1 row but I followed the rest of the instructions and now everything is displaying. Many thanks.