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

Natao arisiva ity resaka mitohy ity. Mametraha fanontaniana azafady raha mila fanampiana.

Lost calendar in 45.5.1 update

  • 2 valiny
  • 8 manana an'ity olana ity
  • 5 views
  • Valiny farany nomen'i Adrian2014-tpg

more options

Just updated to Thunderbird 45.5.1 and lost my calendar tab. I'm too scared to reload Lightning add-on in case I lose all my data.

Just updated to Thunderbird 45.5.1 and lost my calendar tab. I'm too scared to reload Lightning add-on in case I lose all my data.

Vahaolana nofidina

Out of curiosity: what version did you update Thunderbird from?

It should be safe to install and reinstall the add-on - any data should be left untouched. If you have doubts however, make sure to back up the calendar-data folder located in your profile folder first. Use the search field in the Add-ons Manager’s top right to find the most recent Lightning version.

If Lightning still doesn’t work, I suggest reinstalling the Thunderbird version you used before the update, as shown in the Update History in Options > Advanced > Update.

Does this help?

Hamaky an'ity valiny ity @ sehatra 👍 1

All Replies (2)

more options

Vahaolana Nofidina

Out of curiosity: what version did you update Thunderbird from?

It should be safe to install and reinstall the add-on - any data should be left untouched. If you have doubts however, make sure to back up the calendar-data folder located in your profile folder first. Use the search field in the Add-ons Manager’s top right to find the most recent Lightning version.

If Lightning still doesn’t work, I suggest reinstalling the Thunderbird version you used before the update, as shown in the Update History in Options > Advanced > Update.

Does this help?

more options

Hi, Yes reinstalled 45.5.0 and the Lightning app. All back to normal. Thanks,