We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

ابحث في الدعم

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

Calendar entries disappear after updating from v78 to v91.

  • 2 (ردّان اثنان)
  • 2 have this problem
  • 1 view
  • آخر ردّ كتبه sciclunt

more options

I updated Thunderbird from 'Help - About Thunderbird' from v 78 to v 91. I had one calendar and after the update all entries in the calendar disappeared. I removed v91 and installed v78, and restored my last backup of the profile to solve the issue. Now I am on v 78.12.0 and I may update to v 78.14.0 from 'Help - About Thunderbird'. Is this a known issue?

I noticed that on v 78.12.0, the Calendar Properties shows 'Location: moz-storage-calendar://'. If I'm not mistaken the 'Location' field was removed in v 78.14.0.

I updated Thunderbird from 'Help - About Thunderbird' from v 78 to v 91. I had one calendar and after the update all entries in the calendar disappeared. I removed v91 and installed v78, and restored my last backup of the profile to solve the issue. Now I am on v 78.12.0 and I may update to v 78.14.0 from 'Help - About Thunderbird'. Is this a known issue? I noticed that on v 78.12.0, the Calendar Properties shows 'Location: moz-storage-calendar://'. If I'm not mistaken the 'Location' field was removed in v 78.14.0.

الحل المُختار

Thanks Lampros for your help. I wanted to avoid deleting the profile because I will loose all settings, so I tried the following shortcut and it worked: Export calendar - Update to v 91 - Exit TB - Delete all files in folder calendar-data from the profile - Launch TB and import calendar.

Read this answer in context 👍 0

All Replies (2)

more options

Before upgrading to TB91.


Uninstall old version of TB. I would also suggest to delete the profile folder (export contacts & calendars) Install TB91 ( Create a new profile) Import calendars.

Modified by Lampros

more options

الحل المُختار

Thanks Lampros for your help. I wanted to avoid deleting the profile because I will loose all settings, so I tried the following shortcut and it worked: Export calendar - Update to v 91 - Exit TB - Delete all files in folder calendar-data from the profile - Launch TB and import calendar.