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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.

Hi Team,

I recently started using THunderbird as an inbox and calendar tool a new business we have started with my team. I have a couple of questions.

1. I have the e-mail app on my android phone, but how can I get thunderbird calendar on it? 2. My other two businesses use google domain and e-mail accounts and my personal calendar is also on google. How can I sync the thunderbird calendar with my google calendar, so that events which I create, receive, accept on one of the calendars (i.e. Thunderbird) will automatically appear on the other (i.e. Google). 3. And is there a way to sync the calendars so that I can edit calendar events from everywhere (regardless of where they have been created)?

Thank you in advance.

Kind Regards, Alex

Hi, I have set-up 2 calendars for my 2 email addresses on Thunderbird email client with Provider for Google Calendar, and besides the invites, the calendars work well with 2 way sync, etc.

Problem is when I accept an email invite on Thunderbird from either account it automatically goes to one calendar and not the other and I can't find a way to get it to the proper calendar.

- One calendar is from MS Exchange/Outlook (synced with Thunderbird) where all invites go - One calendar is my Google/GMail calendar (synced with Thunderbird) where invitations do not go Interestingly on my Google Web version (Google Calendar site, not Thunderbird) the invites are properly allotted to the right calendars. So I am guessing it’s my Thunderbird setup.

Have attached 4 screenshots: - Calendars listed - Settings for the MS Exchange calendar - Settings for the Google calendar - Screen where I accept the invite. The invite is sent to the Gmail address and the response is the proper Gmail address. Also something odd about me "not being on the list" shows up whenever I accept from any account.

Any help is greatly appreciated!

Hello,

I am getting old, my vision is much weaker than it used to be and now I have what is commonly referred to as "Eye Floaters." There's nothing that can be done to fix that, but with dark themes I can usually not see them. Due to a bug (or feature, if you prefer) in the Windows 10 Scaling and Layout settings, once you change them, there's no going back, at least that I have found. Low vision forced me to try to increase the font size in Windows, and in the (seemingly irreversible) process, I set Scaling to 150%. That fixed the problem of text being too small, but it also affected many programs in a negative way. Everything is waaay too big. For example, the menu bar and overall page header in Firefox was massive, taking up nearly a third of the top of my monitor screen. It did the same thing in Chrome only worse. The page footer was almost as big and between the two it left about two inches in the middle to view a website's content. This was very annoying to say the least.

I found a fix for Firefox, by changing the ui.textScaleFactor to 100. However, that did not work for Thunderbird. I found a way to fix it, by going back to Thunderbird 102, and now the email and address book are fine, and the calendar works fine, except for the colors with really bother me. I can't read the screen without looking away to the right of the screen. This is because the colors are too bright, and that is in a dark theme. I don't even want to look at a light theme. It would probably blind me.

Here's what I have. The 1st image is what it looks like, and the 2nd is what I would like to make it look like. Is it possible to do that? Please excuse the low quality color replacement on the 2nd image...

When adding a future date event from the Lightning calendar Today Pane (with mini-calendar displayed), I click on the date when I want to add the event, then click the New Event link below the calendar. This brings up the New Event dialog, but the dates in the Start and End fields default to today's date, not to the future date I selected in the Today Pane, so I have to re-select the desired date in those fields. In older Lightning versions, those preselected dates used to default to the date I selected in the Today Pane, which is obviously when I want to add the event. Is there any way I can get this old behavior back in the current version (102.2.2)? If not, I'd like to request that this behavior be added, or at least have the option to be added, in a future release. Thank you for listening.

Found this thread: Caldav does not seem to exist in my thunderbird [https://support.mozilla.org/en-US/que.../1410160]

As stated on that page:

Its just not there as an option. All the tutorials I see say to select caldav... Its just not there.

And that post seems to have no useful answer as of 10/3/23

Is there ANY way to do this. Or do I need to abandon Lightning altogether and use a different client?

I'm currently running Thunderbird version 115.4.1. All dates in the mini-calendar have dots below them, even dates on which I have no events scheduled. I would like to see dots only on dates when I have one or more events scheduled. Is there a fix for this? Thanks.

Note that I had this problem with an earlier version of Thunderbird, but it went away after an update. It's now back with a vengeance.

It's not on settings. I found this css code but don't know how one installs css for thunderbird. I got as far as opening the config editor on the calendar options. But I don't see what entry it is.

Alternatively if I can change the weekend colors that would work well. They are nearly the same yellow as the CURRENT color.

https://support.mozilla.org/en-US/questions/1304213

Thanks!

1. Today on opening Thunderbird I get a page with all the new features - can't find that after closing - can you give me a link?

2. BIG PROBLEMS though now with my calendar - all my repeating events have disappeared & it won't let me add new ones, only single events. I need this to work like it used to asap.

3. I want the daily events pane to be back on the right side of my screen - but can't find a way to make that happen - can that be done?

4. When the reminder pop up appears, if I click dismiss the now empty pop up screens stays open - how do I get it to auto close after I select to dismiss or remind me later like it used to?

(

Hi,

since updating Thunderbird (Fedora 36) to 102.2.1 (from thunderbird-91.12.0-1.fc36.x86_64), my personal calendar, hosted on Google Calendar, has started to have sync issues, with now being empty, without error message. Re-starting Thunderbird, synchronizing or hiding/re-showing the calendar (which helped in the past) doesn't help in any way.

I couldn't find a corresponding bugzilla and wanted to hear if it's a generic issue and how to proceed with debugging.

I've even removed the calendar re-add it, Thunderbird discovers my calendars properly, using gmail.com as location and my corporate e-mail as login.

During first synchronization, I get a bunch of

``` 10:21:43.099 Calendar: Invalid alarm for item: 1-0-5e276357f7219c00016e1645 (BEGIN:VALARM

TRIGGER:PT15M

END:VALARM

) exception: [Exception... "Illegal value" nsresult: "0x80070057 (NS_ERROR_ILLEGAL_VALUE)" location: "JS frame :: resource:///modules/CalAlarm.jsm :: set icalComponent :: line 499" data: no] calItemBase.js:953 ```

And then:

``` 10:21:56.614 REPORThttps://apidata.googleusercontent.com/caldav/v2/myuser@acme.com/events/ [HTTP/2 403 Forbidden 53ms]

10:21:56.679 REPORThttps://apidata.googleusercontent.com/caldav/v2/myuser@acme.com/events/ [HTTP/2 403 Forbidden 55ms]

REPORT https://apidata.googleusercontent.com/caldav/v2/myuser%40acme.com/events/ Status 403 Forbidden VersionHTTP/2 Transferred541 B (65 B size)

10:21:56.780 uncaught exception: [calCachedCalendar] replay action failed: <unknown>, uri=https://apidata.googleusercontent.com/caldav/v2/myuser%40acme.com/events/, result=2147500037, operation=[xpconnect wrapped calIOperation] ```

But then, other (group) calendars using the same account sync without issue.

Thanks, Eric

PS: on the bright side, Thunderbird uses a lot less CPU cycles. Very appreciated.

Hi,

For some reason, I don't see the calendar subscriptions in the Calendar view. I restarted the app, and I'm at the latest version. I did install an add-on that made things a bit wonky (a markdown plugin, but I'm not sure if that's when the calendar subscriptions disappeared). I uninstalled it. I noticed the problem after I had uninstalled the add-on.

Does this problem seem familiar to anyone? If so, how did you fix it?

Thanks,

L

Hello everyone,

First of all I would like to say that I love Thunderbird! I am also not very IT literate when it comes to manipulating software or using the correct language so please bear with me, I find these a bit overwhelming.

I was hoping someone could help me with with my calendar, I have tried to change settings on other software and it went terribly wrong and I don't want a repeat. I have read the various help files but it doesn't make much sense to me :(

I have a domain with Dynadot for my website and email, it's basic but does the job for my small business. It has IMAP abilities and an autoreply but that's about it- there's no calendar app but does have an email app... just. On my Windows laptop I use Thunderbird for all emails and calendar requirements which is great when I'm using my laptop. However, I do meet with participants and don't always use my laptop so I need a way to be able to view and book appointments using my andriod phone.

I also have a member of staff who needs access to my calendar and be able to book appointments for me and vice versa. As we are both out and about a lot the calendars need to be "live" and easy to reach, much like the paid for Outlook shared calendar.

At the moment my member of staff doesn't use Thunderbird as their main software, they have Outlook. We did try another email/calendar app but their shared calendars were just links that we had to save and keep logging into, it was a nightmare and without the updating we had some double-bookings. I don't want to go through that again, it was embarassing.

I would greatly appreiciate your wisdom in how I can resolve my issue and easy step by step guidance on how to do it properly. I am the type of person who will get locked out of everything!

Best wishes Rebecca

Hello

My TB data spans decades, for emails, tasks & events [oh, & also contacts]. I've lost count of however many TB iterations / versions it's lived thru. It began life yonks ago in Win7, & lives now, for many years, in Linux.

For at least a couple of years, my Calendar has had this annoying problem. For many Events, but not all, it is just impossible to directly duplicate them. Both Ctrl-C Ctrl-V, & RMB-Copy RMB-Paste, simply do NOTHING [for it seems like the majority (but not entirety) of my Events].

Research lead me to https://bugzilla.redhat.com/show_bug.cgi?id=2015334 [my distro is #Arch not #Fedora, but IMO that's irrelevant]. I was galled to see that bug report was closed without action or solution; also that it was raised only with Redhat not actually Thunderbird.

In exasperation, recently i conceived this inefficient albeit effective workaround: for the target Event, RMB-ConvertTo-Task, then edit said new task to desired date for the intended duplicate, then convert said task to a new Event... then correct all the text formatting that was lost by this silly indirect process.

I've wondered if possibly the database has become corrupted somehow due to surviving all the historical TB version changes, to cause this duplication problem. So last night i thought i'd Export the Tasks & Events ICS file, then Import it into a clean TB profile elsewhere [in some vague hope that this process might magically "fix" any putative data corruption]. The Export nominally succeeded, being an 81 MB file. The Import failed every time, with the error msg per pic.

What is a frustrated TB user now supposed to do, please? [btw, current version is 102.10.1 (64-bit), in ArchLinux KDE Plasma].

Since a recent update of Thunderbird the normal route to access my calendar (via 'Events') has disappeared as 'Events' is nowhere to be seen. Where has it got to? How do I find my calendar? Will

I'm migrating to a new computer and from Windows 10 to W11. I have successfully exported/imported the contacts using the export tool, but cannot figure out how to ex/im the calendar. I am using a SanDisk drive to move the files. Both systems have TBird 102.1.2 (64-bit).

Please give step-by-step instructions to do the calendar (only) ex/im. I do not use the Mail feature.

Hi,

Is there a way to synchronize data between calendars in thunderbird, or with an extension? I am looking for something that works like the outlook caldav synchronizer (https://caldavsynchronizer.org/).

This tool uploads all events I enter in the outlook calendar, to the google calendar, and vice versa.

In the case of Thunderbird, I'd like events I enter in the "home" calendar, to be synchronized with the google calendar I have also attached. I don't want to be forced to select the google calendar every time I add a new event.

I am evaluating TB and the integrated calendar. I had no problem installing mail and calendar in terms of synching, mailing, and receiving except one: The calendar page will not refresh unless I hit the Hide/Show eye icon next to the calendar. Sometimes it also shows if I toggle from Today to Week.

Calendar properties do not show any options at the bottom for refresh cycles (see attachment). Other specs are below.

This is a show stopper for me, since appointments that were transferred but not showing are of no use. Please advise.

Thanks, Michael Clifford Details below

TB Synch - Periodic Synch set to 1 minute Win 10 Home Imap Mail Server outlook.office365.com checks for msgs every 3 minutes TB 91.9.0 (64-bit) Provider for Exchange ActiveSync

I have always exported my calendar events in the CSV format to upload them to Google Calendar. That's gone. The Ical exported file is incompatible with Google Calendar. When attempting to import I just get a message reading:

"Imported 0 out of 0 events. Unable to process your iCal/CSV file."

I'm using version 102.3.0.

Any help is appreciated. Restoring the CSV export function would be even more appreciated.