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My Thunderbird Calendar has started displaying time in 24-hr format (HH:mm), while by Thunderbird eMail continues to display the ‘am/pm’ format (hh:mm tt), correctly using my laptop’s Windows 10 System format, as shown in Control Panel/Region/Formats tab. I’d like to get Calendar back to hh:mm tt, without loosing all my calendar data. I suspect the problem was caused by an interruption when downloading the latest Thunderbird update, so I’ve tried manually downloading and installing a fresh copy of Thunderbird Setup 102.0.3, but the time display format wasn’t fixed. Is there a reliable way to roll back to the previous version without losing what I’ve added to my calendar between the time this format change occurred and the time I first noticed the change?

I have just moved from Outlook and I have converted my PST calendar to ICS. When I try to import the ICS file, nothing happens.

The JPG shows where the import stops.

Is there a solution and if so, how do I fix it?

I don't want to have to keep Outlook around just to use its calendar.

Thanks for any assistance.

Jimmy Lightfoot

I am no longer able to import iCalendar appointments I receive via email. Add-ons installed: Google Cal Plug-in, Open Google Cal, and Provider for Google Cal. Disabled (now incompatible): TbSync, gContactSync

I have attempted two approaches: 1. +Add from the email (attachment) itself 2. Save to desktop and then Events & Tasks | Import...

Thank you, Mike

Hello. I wanted to ask you about the option of switching between calendars in thunderbird I have two gmail accounts and I mainly use one of them altogether with the calendar. Thunderbird automatically loaded the calendar from the other account. I tried to switch it by going to Edit - Calendar preferences - and marking the right calendar account but it still didn't work. How do I do it? I also change the language but somehow the actions don't apply. Is there an option how to save the changes I am making?

Sebastian

Hi community,

I am looking for the way to change the start of the week to Monday. The default is Sunday start, but I can't find a way to change it so far.

My thunderbird version is 102.1.0 (64bit) for windows.

I will appreciate your help.

Thank you in advance, KT

Hi there,

the event time selected during event creation has the 24 hrs format I want, but the calendar after it has been created shows it with 12 hrs format - see the uploaded image: is there any way to fix it?

I'm running Thunderbird 102, 64 bit, fresh installation (not upgrade) on Win 10.

Thanks in advance.

Jbourne_sk

Hello,

After upgrading to Tb 102.0.2 calendar (Lightning) is not following "Date and Time Formatting" setting. Anyone knows how to fix it?

Thanks,

JM

I followed the instructions here: https://support.mozilla.org/en-US/questions/1364439 After pasting in the URL of the Google Calendar from the browser, the process asks for the password used for the Google account. I provide the password, but the response is "The credentials you have entered were not accepted."

To confirm that the user name (my Gmail account) and password were entered correctly, I logged out of Calendar on the browser and logged in again using the credentials that were refused by the Create New Calendar process.

This isn't a showstopper, but it would be nice to have the calendar in Thunderbird.

Lightning now has a popup when you click on an appointment to edit it. This is a REALLY REALLY POOR IDEA! One more thing I have to click on. One more thing making my RSI worse. I cannot imagine why this new massive irritation has been implemented. Please would someone tell me how to make it stop doing that. Thanks in advance.

Could you please assist for that issue: I've updated 91.latest Thunderbird to 102.1.2 and all tasks disappear? I can't make return to previous version of thunderbird 91 where is lightning work properly. However, I made buck up copy of my calendar and I can see all tasks in file, but it's not appeared in version 102.

Using Thunderbird v102.1.2 Platform: iMac running Mojave 10.14.6 email: [edited from public] @earthlink.net

Unable to link to an Apple Mail account (on iCloud). Tried every solution on the web and still nothing happens when I complete the new calendar form (which seems to be different from many of the examples on the web}. Using the same information and entering it into my older Sunbird account, it links up immediately.

This seems like a simple problem, and I am willing to settle for a read-only sync, but after numerous hours of research and attempts, nothing works.

I am apparently doing something wrong in Thunderbird/Lightning. Please advise your thoughts.

Thank you

It's a pity that we reached version 102.1.2 and till now a common problem has not been solved. In email composing window when misstype a word there is the red indicator for mistakes and then by right clicking we get the correct proposed words. In event creation we get only the red indicator for mistakes. Nothing more. It's a pity a so much advertised version to lack such a basic feauture.

I have recently switched from MS Outlook to Thunderbird/Lightning. So far, reasonably so good. One thing that continues to frustrate me is an issue with calendar reminder popups. I thought I was not getting them, but now I think I'm getting them but they disappear. Some research suggests that it may have already been reported that reminder popups will disappear once Thunderbird checks for new mail, and what I'd vastly prefer is for a calendar reminder popup to stay, well, popped-up until I dismiss it.

Am I missing something? Maybe a setting somewhere? Or is this a known issue that has yet to be solved?

I did have a massive problem when I imported my Outlook calendar in that I got reminder popups for every calendar entry back to the dawn of time, and which would NOT dismiss no matter how many times I tried, so I enabled the setting to not remind me about past events.

It seems as if I may have to choose between two unacceptable options: either re-enable reminders for past events, so that when Thunderbird checks for mail any undismissed reminder popups will remain (or re-popup), or live with the reminder popups disappearing (and, the whole reason I'm writing this, I'll miss calendar events if I don't happen to be glued to my computer for the 30 minutes the popup will exist). Is there not some other option?

Thunderbird recently prompted me that an update was available to v 102.1.2 (although the release notes say it can't be installed this way yet). Not sure which version I had before, but probably the last before 102 as I update when prompted. I wasn't paying enough attention, of course I should have realised it was a major upgrade and backed up my data first ...

Email seems fine but I now can't see some calendar events, depending on the view: Day and Week show no events at all, Multiweek and Month show up to and including 4 Sep 22. I can't see any events beyond 4 September, although there is a multiday event that start on 2 Sep - it's not visible in the calendar after 4 Sep but the details still show the end date as 11 Sep.

Some recurring events have disappeared completely, but one on 31 Aug is visible in Multiweek but not in Month view. So maybe the events are still there but not being displayed?

I had been using the "Calendar Tweaks" add-on, which is no longer supported, so I removed that and restarted Thunderbird, but it had no effect. I also see that there have been a few issues like this with earlier upgrades, but none of the fixes seem to match the current state of things. Would really appreciate it if anyone knows how to fix this.

Information on how to add the Google 'Tasks' into Thunderbird Calendar: I have a gmail imap account using OAuth2 as Authentication Method.

File > New > Calendar, select 'Google Calendar' >  click on 'Next' choose or enter: gmail email address   > click on 'Find Calendars' Select 'My Tasks' and click on 'Subscribe'

You may be asked to enter password as per Oauth2 Authentication.

See image. It shows the selection available when you follow instructions. It shows where 'My Tasks' is located in the Calendar list. I selected 'My Tasks' and then clicked on 'Task'. Create the Task and save. Task is shown in Thunderbird and on the right side you can see the Task is displayed via the webmail access using a browser.

Where can I find the meanings of the symbols on an event in Thunderbird calendar? I have some events that show a wrench, and for these events it seems I cannot dismiss reminders. And how do I get rid of it?

Thank you in advance, Stephan

With the update to release 91.13.0 the icon to open the calendar disappeared from the tool bar. The icon is now located above the search box. How do I get it back to where it belongs?

Hi guys.

I have a small problem that I'm trying to solve. I'm in Linux, but unfortunately, I still have to work with MS outlook, in VMWare, because Thunderbird have a lack of functionalities comparing to MS outlook, and I cannot live without these functionalities. I manage over 100 complex calendar notes per day, with attachments (e-mail attached, images, and other calendar notes attached).

The following functions could increase the functionality of thunderbird if they were implemented: - Select several notes at the same time, to delete them, or to Drag and drop to another hour or another day, just by releasing the notes in the day using the side calendar (that has the number of the days) or releasing the notes on the day visualizer; - Select several non contiguous days using the function key CTRL (example, day 3, 8 and 15), to view them side by side, and/or to drag and drop calendar notes from one day to another; - Ability to add attachments to calendar notes.

I'm really looking for a management of the calendar, similar to Microsoft Outlook, but I don't want Microsoft, I want open source.

Do you guys know if there are plans to implement these functions in any near future?

Thanks in advance.

Why don't you incorporate the fabulous code from Calendar Tweaks by DW-dev. This add-on made the calendar much more useful. Since it is no longer being supported, it should not be a problem. The current little color tags on events is lame.