All Products Community Forum

I tried everything (local calendar or online an so on). Version 52.9.1 works excellent, but 60 runs only without lightning (disable during installation). With lightning it crashes not directly, but after some time, for example: you have a marker in the calendar to inform you by sound or similar.Go back to a separate add-on.

I use Thunderbird as main email client on PC, I also access via iPAD email

On iPAD if I get a Calendar invite (eg Teams) I can scroll to bottom of the invite, and there is an option to add ICS file to Calendar. I click on it and it pushes the invite to Google Calendar, and it inserts the correct appointment.

However on my main device (W11 PC) Thunderbird does not show any ICS file. There is a banner that say "This message contains event information. Enable a Calendar to Handle it" Can it be configured to use Google Calendar as the linked Calendar ? If so, could someone explain to me how to do this.

Hello,

Since the update of Thunderbird 140.2.0esr (64 bits), when I look at the Thunderbird calendar after checking my emails, the default view goes back to midnight (as display on the attached picture) and I have to scroll every time to 8 am. The question was asked 5 years ago in the forum but the solutions to uninstall and reinstall the software did not fix the issue.

Do you know how the default view could begin at 8 am? Thank you I am using Ubuntu 24.04.3 LTS

Some of my calendar reminders are not appearing. At least one in particular is still showing. This is a daily reminder. Other reminders whether for a set period or just a one off do not appear.

I am using Version 140.1 on Firefox.

When I first opened Thunderbird (just a few weeks ago), I noticed that some Calendar Tasks were already set up by Thunderbird. (My standalone calendar is Efficient Reminder).

But I don't see options for REMINDERS - popups (preferably) and/or sounds. (The purpose of a calendar for me is to be reminded to do things.)

I searched for options in Thunderbird, and I looked on the information here, but can't find anything.

If I can I select a sound and/or popup to REMIND me, where can I find the option to set it?

It seems that this guide does not work anymore: https://support.mozilla.org/en-US/kb/adding-a-holiday-calendar

The point 5 ("From the Format list, select iCalendar (ICS).") is not there anymore. The wizard shows directly a form where you can enter the "Location", but if you enter the URL of an ICS file, it says "Could not find calendars at this location. Please check your settings."

Is there a different way to add these calendars? (and any other ics calendar you can find on the web)

Thanks

I FOUND no close TOPIC.

Google calendar allows color-coding of events - but the display is highly inadequate. T-bird 128 calendar apparently HAS no option to color events. But events are FAR easier to see WHEN color-highlighted. Would this be a difficult option??

My calendar has disappeared. I have years of important dates that are lost. . . say it ain't so, Mozilla! WTF. My "add-ons" show nothing installed. Are you kidding me? They broke Thunderbird?

Two days ago, my Google calendar tab disappeared in Thunderbird and I don't know if it is possible to get it back. I manage all events and appointments from Thunderbird so am really missing it. How can I get it back.

I am unable to print a calendar to either an installed printer or to an installed PDF printer. I'm running Windows 10 64-bit. I was able to print an email just fine.

Is there a way to copy Lightning calendar entries? Often, you will want to use an existing calendar entry as the starting point for a new entry which is almost identical (but not quite recurring), so I wondered if there was an easy way to do that.

Please Someone help ?

I have followed all the suggestions I can find, but my Thunderbird Calendar will not sync with the Outlook Calendar on Windows 11. I am using TB Sync, but every time I try to add my Outlook Calendar ? It refuses to accept my Password, even though it is correct, and the User name and email are too ! It shows as error code 401, and cannot authenticate ?

I have tried a suggestion to create an 'App Password' to use in my Microsoft account, but the options described do not exist in my account !

Can anyone please help ?

After an update to Thunderbird around 8/10/24, I can still list future calendar events, but no longer past events. It is very useful for me to list past events. For example, I can quickly find out when I last had a flu shot. Could you restore this ability to print a complete list of past events, as well as future events? Thanks! Carl Lund

How can I get back the ability / setting I always had to see the right side 'mini-view' of my monthly calendar? I used to be able to see each day on the right side of my calendar - now it's not showing??? I'm sure it's a simple display setting or option - but I can't find it - please help...

After I allowed the upgrade to 54.4, the Calendar is no longer showing on Thunderbird. What's confusing is that if Lighting is packaged with Thunderbird (after V38), I shouldn't have to also add-on Lighting, right?

This is on Windows 7.

Below is the Troubleshooting Information:

 Application Basics

   Name: Thunderbird
   Version: 52.4.0
   User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0
   Profile Folder: Open Folder

             (Local drive)
   Application Build ID: 20171004092449
   Enabled Plugins: about:plugins
   Build Configuration: about:buildconfig
   Memory Use: about:memory
   Profiles: about:profiles

 Mail and News Accounts
   account2:
     INCOMING: account2, , (none) Local Folders, plain, passwordCleartext

   account3:
     INCOMING: account3, , (imap) secure175.inmotionhosting.com:143, alwaysSTARTTLS, passwordCleartext
     OUTGOING: , secure175.inmotionhosting.com:465, SSL, passwordCleartext, true

 Crash Reports

 Extensions
   Provider for Google Calendar, 3.3, true, {a62ef8ec-5fdc-40c2-873c-223b8a6925cc}
   Bitdefender Antispam Toolbar, 7.0, false, bdThunderbird@bitdefender.com

 Important Modified Preferences

   Name: Value

     accessibility.typeaheadfind.flashBar: 0
     browser.cache.disk.capacity: 358400
     browser.cache.disk.filesystem_reported: 1
     extensions.lastAppVersion: 52.4.0
     font.name.monospace.el: Consolas
     font.name.monospace.x-cyrillic: Consolas
     font.name.monospace.x-unicode: Consolas
     font.name.monospace.x-western: Consolas
     font.name.sans-serif.el: Calibri
     font.name.sans-serif.x-cyrillic: Calibri
     font.name.sans-serif.x-unicode: Calibri
     font.name.sans-serif.x-western: Calibri
     font.name.serif.el: Cambria
     font.name.serif.x-cyrillic: Cambria
     font.name.serif.x-unicode: Cambria
     font.name.serif.x-western: Cambria
     font.size.fixed.el: 14
     font.size.fixed.x-cyrillic: 14
     font.size.fixed.x-unicode: 14
     font.size.fixed.x-western: 14
     font.size.variable.el: 17
     font.size.variable.x-cyrillic: 17
     font.size.variable.x-unicode: 17
     font.size.variable.x-western: 17
     mail.openMessageBehavior.version: 1
     mail.winsearch.firstRunDone: true
     mailnews.database.global.datastore.id: d50e783d-8aa1-446b-9a63-b17819eabb8
     mailnews.database.global.views.conversation.columns: {"threadCol":{"visible":true,"ordinal":"1"},"flaggedCol":{"visible":true,"ordinal":"3"},"attachmentCol":{"visible":false…
     media.gmp.storage.version.observed: 1
     network.cookie.prefsMigrated: true
     network.predictor.cleaned-up: true
     places.database.lastMaintenance: 1507778828
     places.history.expiration.transient_current_max_pages: 122334
     security.sandbox.content.tempDirSuffix: {4bc965e3-a0da-4a6b-9f8c-4306934d2f06}

 Graphics

     GPU #1
     Description: AMD Radeon HD 6600 Series
     Vendor ID: 0x1002
     Device ID: 0x6758
     RAM: 1024
     Drivers: aticfx64 aticfx64 aticfx64 aticfx32 aticfx32 aticfx32 atiumd64 atidxx64 atidxx64 atiumdag atidxx32 atidxx32 atiumdva atiumd6a atitmm64
     Driver Version: 8.850.0.0
     Driver Date: 4-19-2011

     Features
     Direct2D: false
     DirectWrite: true (6.2.9200.22164)
     WebGL Renderer: Google Inc. -- ANGLE (AMD Radeon HD 6600 Series Direct3D9Ex vs_3_0 ps_3_0) -- OpenGL ES 2.0 (ANGLE 2.1.0.2a250c8a0e15)

     AzureCanvasBackend: skia
     AzureCanvasAccelerated: 0
     AzureFallbackCanvasBackend: cairo
     AzureContentBackend: skia

 JavaScript

 Incremental GC: 1

 Accessibility

   Activated: 0
   Prevent Accessibility: 0

 Library Versions

     Expected minimum version
     Version in use

     NSPR
     4.13.1
     4.13.1

     NSS
     3.28.6
     3.28.6

     NSS Util
     3.28.6
     3.28.6

     NSS SSL
     3.28.6
     3.28.6

     NSS S/MIME
     3.28.6
     3.28.6

Hi,

Someone sends me a calendar appointment for 11th of May at 16:30-18:30 and another at 18:30:20:30. I accept these appointments. In my calendar, they correctly display at these times.

When I close and re-open Thunderbird, the first appointment is now scheduled for 12th of May, but the second is fine. When I close and re-open Thunderbird again, the second appointment is now scheduled for 12th of May as well.

The times are completely different too.

I'm using Thunderbird 138 from the Arch Linux repositories but I've also tried the Flatpak package to no avail. I've tried setting my Timezone manually and using my System timezone to no avail.

GNOME Calendar, which is also synced to my Caldav server, displays the appointments at the correct day and time. The web interface for my mail server also displays correctly.

It's only Thunderbird that screws it up time and time again.

This has been going on for years and it is driving me insane. I can't use my calendar with Thunderbird because I keep thinking my appointments are at the wrong time!

Send help.

Somehow I was running an unsupported ver 129 on a Win 10 system, not sure how. I was getting a warning message at startup. I decided to install the latest supported ver 128. I did that over the ver I was running and did not save, export or rename anything. Just one install over the other. I have lost my calendar that I spent months building. Did I lose it? Any possibility it is still around hiding somewhere? Help please, but I am prepared for the worst for being hasty in my decision. Cheers, TR

This morning there was an update to Thunderbird. When I reopen the program I can no longer see the right end of the screen. There is no toolbar to scroll over to see that side, and I've been unable to resolve this in the settings. I am using Density > Compact and I do not have any add-ons installed. See screen capture. I will have to stop using TB if this can't be resolved.

Computer crashed. After restoring, Google calendar is not syncing. No error message that I can see. I unsubscribed and resubscribed to no avail. I have no clue what to look for and searching here is not helping as all the references to this are years old. Can someone help me figure out why this is happening?