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Thunderbird 78.11.0 (64-bit)

  • 3 replies
  • 1 has this problem
  • 5 views
  • Last reply by AUK

AUK
AUK
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Calendar data disappears for no apparent reason. This has happened over the last 4 weeks. I have entered several appointments and suddenly after 2 or 3 days, all of them are gone. No updates or changes to my system has been done. Nor are any additions included in Thunderbird. How do I proceed ?

July 28th 2021: Exactly the same has happened again this Morning ! No apparent reason.

Where can I find a backup file and what is the name(s) of these files ?

Calendar data disappears for no apparent reason. This has happened over the last 4 weeks. I have entered several appointments and suddenly after 2 or 3 days, all of them are gone. No updates or changes to my system has been done. Nor are any additions included in Thunderbird. How do I proceed ? July 28th 2021: Exactly the same has happened again this Morning ! No apparent reason. Where can I find a backup file and what is the name(s) of these files ?

Modified by AUK

All Replies (3)

timo16
timo16
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I think this side can help you: https://support.mozilla.org/en-US/kb/calendar-updates-issues-thunderbird

AUK
AUK Question owner
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Thank you Timo ! Unfortunately it does not help me as I do not use Lighting. It does not appear as an add-on to Thunderbird.

AUK
AUK Question owner
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Once more the same problem !

Where can I find more help ?