Thunderbird Support Forum

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 ?

So. Thunderbird released an update, I updated, and all my custom event colours, that I really need, have gone from old to current see attachments. This was asked https://support.mozilla.org/en-US/questions/1326997?utm_campaign=questions-reply#question-reply

And a solution found that worked. Now Mozilla in their ludicrous wisdom have somehow screwed this up again. Anyone have a solution that works? I and lots of other people like the whole event title bar being a single colour. These 'dots' at the end are useless to see. Thanks PS Stop screwing with the settings. What to add something new, then create an add-on.

I have added TbSync and CalDev/CardDev to each of 3 Thunderbird Lightning accounts and have set up 1 account on woelkli.com (their cloud area). I had hoped that adding a calendar event on any one of the 3 Thunderbird would then be replicated in the other 2 accounts. This does not happen and I am unsure what I need to do to make it work. Please could someone advise me. Thank you

I've used thunderbird with gmx calendar for many years. Apart from persistently forgetting its "stored" password, I've never had any problems.

But about a month ago, I started getting a message that the servier wants to redirect from the usually-correct https://calendar.gmx.com/begenda/dav/[my name]@gmx.com/calendar to gmx.com.

At first I didn't accept the redirection, but the calendar stopped syncing. Then when I did accept the redirection, the calendar disabled itself altogether. Using the ENABLE button didin't help.

The GMX calendar itself is working fine:

• I can access by logging in at gmx.com and the organiser tab
• the calendar still works fine via my lineageOS phone
• if I go to https://calendar.gmx.com/begenda/dav/[my name]@gmx.com/calendar while still logged in, I can download a raw list of all of my events

GMX support suggested removing the calendar from firefox, changing the password on gmx and adding it up again. Mostly it was not possible to add it, with thunderbird giving the message:

https://user-media-prod-cdn.itsre-sumo.mozilla.net/uploads/images/2022-04-16-00-57-44-0e6dec.png

That long location is the location suggested as correct in gmx thunderbird FAQ. But I also tried setting the location as gmx.com or caldav.gmx.com with the same result.

Eventually after trying on numerous occasions I managed to add the calendar again, but in less than a day I was back to getting the redirect message and the calendar not syncing.

I've removed the gmx calendar, reinstalled thunderbird and tried to add the calendar again. At the moment it will not add using any of the locations mentioned above. But of course, I can still access it via gmx.com and my lineageOS mobile.

Also tried adding with thunderbird in troubleshooting mode but no difference.

I subsequently tried two suggested addons (now disabled because they did not help):

https://user-media-prod-cdn.itsre-sumo.mozilla.net/uploads/images/2022-04-16-01-13-26-d28ffe.png

• Thunderbird help says 91.8.0 and it's running on windows 10 64 bit.
• I don't have any caldav-related addons (nor did I need any in the many years when gmx calandar was working properly in thunderbird

I do have these addons (but the troubleshooting mode test should have eliminated them)

https://user-media-prod-cdn.itsre-sumo.mozilla.net/uploads/images/2022-04-16-01-19-55-b59057.png

What to try next? I'm only interested in the calendar, not gmx email and I'd prefer to see my calendar in thunderbird than at gmx.com

My calendar is suddenly a day behind on all of its dates, and the time for adding an item to the calendar is off by an hour. Is this just my computer (MacBook Air), or are others having this problem too?

Everything works fine before upgrading from v74 to v91. After upgrading to 91, all dates are 09:59 in the calendar (please see image.) Restoring to 74 and everything works fine again.

Hi all and thanks in advance.

When accepting an appointment/import ics I get the error in the error console

Calendar: Couldn't find Amsterdam, Berlin, Bern, Rome, Stockholm, Vienna

The meeting is sended from Outlook for Mac. I use Thunderbird 91 on Ubuntu 20.04

Content of the ics file: BEGIN:VTIMEZONE TZID:Amsterdam, Berlin, Bern, Rome, Stockholm, Vienna X-ENTOURAGE-CFTIMEZONE:Europe/Amsterdam X-ENTOURAGE-TZID:9 BEGIN:STANDARD

My current time zone in the setting is: Europe/Amsterdam

Any suggestions to be able to accept the meeting?

Cheers!

When I try to import an ics file into the Calendar I receive a message "Cannot import from Downloads/appointment.ics. There are no importable items in this file." I found some articles where the line endings were not correct, I checked they are OK. I checked for invalid characters, there are none. So how I import the ICS file? What is not correct in the file? The file is: BEGIN:VCALENDAR VERSION:2.0 PRODID:-//Sabre//Sabre VObject 4.3.3//EN CALSCALE:GREGORIAN BEGIN:VEVENT UID:sabre-vobject-40eef33e-ae8f-4ebd-bae1-1e7f9b11a28f DTSTAMP:20220603T193644Z SUMMARY:Appointment - mymeeting DTSTART:20220707T133000Z DTEND:20220707T140000Z LOCATION:6875 Bd Rue Mycity Canada ORGANIZER;CN=1: ATTENDEE;CN=1: END:VEVENT END:VCALENDAR

Thunderbird 91.10.0 (32-bit), Windows 11. My PC went to sleep as normal while I was out for a few hours. When I returned and woke it up to check my emails I noticed the Thunderbird Calendar had gone - just the Inbox is there. In the View menu Calendar and Tasks are greyed out. The Calendar is stand-alone on the PC, not synched anywhere. I had put a couple of new Calendar entries in earlier, everything looked fine. No updates, installs or uninstalls before this happened. A Bitdefender scan says my system is clean. Email seems to be working fine. I have reached the limit of my technical abilities, any suggestions please?

I need to sync TB with Outlook.com calendar. But tbsync will not work with TB 102.0b8. Apparently hasn't been updated as yet. I can always back up to the previous version of TB, but I'm afraid I will lose features in this new version. Any help would be appreciated. BTW, this particular PC of mine is running Windows 8.1 due to the needs of a particular business application I use.

I just updated to 102 and lost calendar. I tried instructions from your help page. Got as far as "extensions.installedDistroAddon.{e2fda1a4-762b-4020-b5ad-a41df1933103}". What I see is that boldface in a box with True further to the right and then a toggle and delete icon. When I right click I only get a box that says copy, paste or select all, with select all being the only option available. I tried toggling to false and then continuing. When I go to the add on manager and select extensions, there are none listed. I tried restarting Thunderbird at that point, but the calendar is still not showing my info. Help!

Hello this morning Thunderbird Updated in Germany to Vers. 102. At vers. 102. Calender shows no categories in Google Calender or Web.de Calender.

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.

Since upgrading to Thunderbird v102 on my Mac I've lost events from my Lightning Calendar. I seem to have lost all my bi-weekly or monthly repetitive events (my one-off or annual repetitive events seem to be in tact).

I've tried closing the calendar and restarting Thunderbird but all to no avail. I was wondering whether I might restore my Lightning Calendar from my Time Machine backup (before I updated to v102) and, if so, what files I might need to replace.

As mentioned in title I cannot use the calendar function at all. Same with tasks function:

• I can open the calendar tab, but that's it.
• There is no calendar on the calendar list, and the 'plus'-icon to add a new calendar is greyed out.
• There are buttons to change the views (week, day etc) but these also are greyed out.
• Same issue with tasks: I can open the tab, but cannot add any tasks

It all worked with older versions of TB. I had several calendars in place, no problem. But after some upgrade everything is gone. The calendars, originally set up on TB, are still there, but only accessible on the g-account...

Version: TB 91.11. Add-ons: Provider for google calendar

Any idea? I really want to use TB calendar function instead. If I could at least only set up a new calendar, that would be very helpful. Thx a lot in Advance!

Hello, 24hrs time was working fine with former Thunderbird. 24hrs time disappeared from calendar when installing Thunderbird 102. In Windows 10 clock: time is correctly set to 24hrs. No way to install 24 hrs in Thunderbird 102 settings. How manually set windows 24hrs time with Thunderbird config? Thank you.

OK, TB is driving me crazy with two Zoom events (plus others in the past that I just had to delete because they were so annoying.)

Whether I click "Dismiss All" or click on the individual event and "Dismiss", they pop right back up. Same thing happens when I try to close the window.

I have removed mail extensions (Provider and another that I can't remember the name of), deleted the calendars, restarted TB, and added the Google Calendars again... but they still pop up.

And, again, this seems to only happen with Zoom events but not all Zoom events... not even all Zoom events on one calendar.

Finally, the calendar is not set to Read-Only.

This is driving me crazy because not only can't I Dismiss them, they also beep every five minutes. Right now I have to disconnect the Calendar before I lose my sanity.

When I enter an event on Thunderbird, it is immediately reflected on my online Google Calendar. However, when I enter the event on google calendar website, it does not automatically appear on my Thunderbird Google Calendar. Don't understand this. The only add-on I have on Thunderbird is the 'Provider for Google Calendar' (to allow bidirectional access to google calendar). I don't see any settings to fix this. Help! Note: It updates when I press 'synchronize' on Thunderbird, but I don't want to have to remember to do that. Should be automatic!!