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Calendar Notification Bug If Thunderbird Not Running

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  • Last reply by johngcorp

johngcorp
johngcorp
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I have run into a calendar notification bug when Thunderbird is not executing. This started about a month ago and may be due to changes in the 140esr release (I was on 128esr previously).

Suppose I set an appointment for tomorrow at 9pm and ask the calendar to notify me a day in advance. If Thunderbird is executing at 9pm on day before, this works fine. If Thunderbird is not active, the notification is never made when I open Thunderbird after 9 pm on the day before the appointment.

This problem also occurs if I Snooze the notification and do not have Thunderbird running when the snooze period is completed. If does work if Thunderbird is open at the time of Snooze completion.

I have tested this on two different computers, a desktop and notebook, both running Windows 10. Currently running Thunderbird 140.2.0esr.

I have missed two appointments when Thunderbird calendar did not warn me about them.

I have run into a calendar notification bug when Thunderbird is not executing. This started about a month ago and may be due to changes in the 140esr release (I was on 128esr previously). Suppose I set an appointment for tomorrow at 9pm and ask the calendar to notify me a day in advance. If Thunderbird is executing at 9pm on day before, this works fine. If Thunderbird is not active, the notification is never made when I open Thunderbird after 9 pm on the day before the appointment. This problem also occurs if I Snooze the notification and do not have Thunderbird running when the snooze period is completed. If does work if Thunderbird is open at the time of Snooze completion. I have tested this on two different computers, a desktop and notebook, both running Windows 10. Currently running Thunderbird 140.2.0esr. I have missed two appointments when Thunderbird calendar did not warn me about them.

Chosen solution

Turn it back on via the menu '☰' → Settings → Calendar → Reminders and then check "Show missed reminders for writable calendars". This should bring back the warnings you expect, after you restart Thunderbird.

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ThundaMike
ThundaMike
  • Top 25 Contributor
Mozilla Staff
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Chosen Solution

Turn it back on via the menu '☰' → Settings → Calendar → Reminders and then check "Show missed reminders for writable calendars". This should bring back the warnings you expect, after you restart Thunderbird.

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johngcorp
johngcorp Question owner
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Thanks for the help. That cleared up problem and showed all of the past reminders I have missed over the last month. I'm not sure how that box became unchecked. I haven't visited Calendar Settings in many years.

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