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My Thunderbird calendar is off by one day in all its dates.

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 ar… (læs mere)

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?

Stillet af george162 for 5 dage siden

Besvaret af Matt for 3 dage siden

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How to refresh form/page of calendar automatically

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 w… (læs mere)

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

Stillet af mjclifford for 6 dage siden

Besvaret af Matt for 3 dage siden

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Lightning opens ftp-link in Firefox

Hallo, i've updated my Thunderbird to 91.8.1 on my Kubuntu 18.04 Lini9x machine. I have some *.ics files attached as calendars via ftp (ftp://192.168.1.1/Kalender/xxx.ics… (læs mere)

Hallo, i've updated my Thunderbird to 91.8.1 on my Kubuntu 18.04 Lini9x machine. I have some *.ics files attached as calendars via ftp (ftp://192.168.1.1/Kalender/xxx.ics). After the update Thunderbird/Lightning tries to open them in firefox.

Every time Thunderbird/Lightning syncronises the calendars, different tabs occur in Firefox trying to open the files. Thanks a lot in advance, Gruß

Andreas K.

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No calendar function in my Thunderbird install?

I am probably trying to do something very stupid or it has a very obvious solution, but please bear with me. It seems my Thunderbird install, version 91.1.8 and now upda… (læs mere)

I am probably trying to do something very stupid or it has a very obvious solution, but please bear with me. It seems my Thunderbird install, version 91.1.8 and now updated to 91.9.0, Win10, does not have a calendar function whatsoever. I tried to find the setup of calendar in every menu available. I have been running and updating this install for some time. For some reason , the outlook calendar satisfied me until now, but I am no more satisfied with the inefficient reminders. - it is not in the account setup - there is no calendar icon anywhere - it seems impossible to add the lightning extension to Thunderbird, as it is now supposedly included in TB: but where? Any hint?

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Thunderbird calendar

I used to keep my version of Thunderbird up to date until a few years ago when it removed my calendar link. I currently have version 52.6.0 installed, because that was th… (læs mere)

I used to keep my version of Thunderbird up to date until a few years ago when it removed my calendar link. I currently have version 52.6.0 installed, because that was the last version that didn't detach my to Google Calendar. Is that still the case or can I update Thunderbird without losing my calendar data?

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USA calendar imported into Thunderbird does not include the Easter holiday.

I added the USA holidays calendar to my Thunderbird calendar and found that it doesn't include Easter. The calendar was downloaded from: https://www.thunderbird.net/en-US… (læs mere)

I added the USA holidays calendar to my Thunderbird calendar and found that it doesn't include Easter. The calendar was downloaded from: https://www.thunderbird.net/en-US/calendar/holidays/

I just thought that I would let people know so they wouldn't end up wasting time using it until it's fixed. I'll have to find a better holiday calendar until then.

Stillet af limcid for for 1 måned siden

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Thunderbird Time Formatting not matching system

I am running Thunderbird on Linux, using version 91.4.1 (64-bit). My OS is set to use a 12 hour clock, yet all times in Thunderbird use a 24 hour clock. I checked out t… (læs mere)

I am running Thunderbird on Linux, using version 91.4.1 (64-bit). My OS is set to use a 12 hour clock, yet all times in Thunderbird use a 24 hour clock. I checked out the help article, and it seemed to indicate having the locale set to English (United States) in preferences should get me the 12 hour clock, but both Application locale and Regional settings locale show that option. Switching does not change anything. I tried looking in the config editor, but I was unable to locate any of the settings to change time formats mentioned in the help article.

Why is Thunderbird stuck on a 24 hour clock?

The help article I tried: https://support.mozilla.org/en-US/kb/customize-date-time-formats-thunderbird

Stillet af Ryebread095 for for 5 måneder siden

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Thunderbird not synching properly with Google calendar for about a week

About a week ago I noticed that most of my calendar events are not displayed on the Thunderbird Calendar tab. Looking at my Google calendar on Google shows about 150 appo… (læs mere)

About a week ago I noticed that most of my calendar events are not displayed on the Thunderbird Calendar tab. Looking at my Google calendar on Google shows about 150 appointments during March Looking at my Google calendar on Thunderbird only shows 2 appointments for March

I use Provider for Google calendar 91.0.4 Thunderbird is release 91.7.0 I have tried disabling Provider and re-enabling it - makes no difference.

Any suggestions please Thanks Pete

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Thunderbird doesn't find ics-file

Hi to all, I try to open an ics-file from a network source in Thunderbird TB 91.7.0 (32-Bit) WIN 10 Professional Unfortunately Thunderbird doesn't find any calendar file.… (læs mere)

Hi to all,

I try to open an ics-file from a network source in Thunderbird TB 91.7.0 (32-Bit) WIN 10 Professional

Unfortunately Thunderbird doesn't find any calendar file. I tried it first:

- with https://name.dn/php/folder/folder/file.ics - with http://... - without https://....

always with an error that no calendar file is found at this adress.

Then I tried it without the file name, only the folder https://name.do/php/folder/folder/ In this case TB asked me for the password, take it, but still doesn't find any calendar file. => Link and Login is valid

When I download the file I can import it without any problem => file is valid

When I copy the link https://name.do/php/folder/folder/file.ics to FF the file is been found and opend by the browser without any problem (=> Login and password correct).

So the file exist and seems to be correct and the path, too, also the login data.

Now I tried it to copy the same file in the folder https://name.do/php/ , which is not protected - and the file is found. So there seems to be a (new?) problem with .htaccess-protected folders.

Any idea what (else) I could try?

Thanks and Greetings Chnutz

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Add a shared google calendar in thinderbird

Hi! I've googled but I can't find/understand the answers... I just downloaded thunderbird to try and want to use the calendar function. I just can't manage to add my hu… (læs mere)

Hi! I've googled but I can't find/understand the answers... I just downloaded thunderbird to try and want to use the calendar function. I just can't manage to add my husbands calendar. I see it when I am logged in on my google account. Thanks, Jaqueline

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  • Arkiveret

calendar invitations are not sent since upgrade to 91

I upgraded to version 91 a while ago and the calendar invitations are not being set to me or the other invitees. I am currently at version 91.2.1 but this is the first ca… (læs mere)

I upgraded to version 91 a while ago and the calendar invitations are not being set to me or the other invitees. I am currently at version 91.2.1 but this is the first calendar item with attendees. This has worked for years. I am on windows 10. I use the local Thunderbird calendar.

Stillet af vsmith42 for for 6 måneder siden

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Calendar - How to start week on monday with Thunderbird v91?

So it seems that "Options" has since changed and is now called preferences. However under this submenu, based on some old screenshots, there used to appear a "Calendar" s… (læs mere)

So it seems that "Options" has since changed and is now called preferences. However under this submenu, based on some old screenshots, there used to appear a "Calendar" section on the left hand side. This is where some older posts showed where you would go to make that change.

However that is no longer there. So where do I go to modify this? Don't think it makes a difference but I'm using Windows 10.

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Besvaret af sfhowes for for 2 måneder siden

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Creating Calendar Events

I just installed Thunderbird Mail. I'm testing out my calendar. I'm having trouble creating an event I went through the help and it didn't give me the answer that I wante… (læs mere)

I just installed Thunderbird Mail. I'm testing out my calendar. I'm having trouble creating an event I went through the help and it didn't give me the answer that I wanted. The Event selection is grayed out. How do I get to the event selection?

Stillet af dave277 for for 4 måneder siden

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Error trying to convert email to calendar event

If I try to convert an email to an event on a CalDav calendar I always get the following error message: An error occurred when writing to the calendar Personal-Don't Bloc… (læs mere)

If I try to convert an email to an event on a CalDav calendar I always get the following error message:

An error occurred when writing to the calendar Personal-Don't Block! Please see below for more information.

MODIFICATION_FAILED

If you're seeing this message after snoozing or dismissing a reminder and this is for a calendar you do not want to add or edit events for, you can mark this calendar as read-only to avoid such experience in future. To do so, get to the calendar properties by right-clicking on this calendar in the list in the calendar or task view.

Then that calendar is marked with an exclamation point. I can unsubscribe and re-subscribe to the calendar and the exclamation point goes away, but I'm still unable to save the event to a subscribed calendar. I am able to convert an email to an event as long as the calendar is on my computer and not a subscribed calendar.

Any thoughts?

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Besvaret af user4443918 for for 2 måneder siden

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My Thunderbird calendar just made itself read-only. This is unacceptable.

How can I make the Thunderbird calendar writable again. A read-only calendar is useless, and my life is organized by this calendar, which I have been using more than 11 y… (læs mere)

How can I make the Thunderbird calendar writable again. A read-only calendar is useless, and my life is organized by this calendar, which I have been using more than 11 years.

I need help!

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How to add Google Tasks ?

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, se… (læs mere)

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.

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Synchronizing Events with External Calendar

I have TB client v91. I use a company Zimbra email server for my email. I have a TB account setup for IMAP to this Zimbra email server. I can view email via my PC, a b… (læs mere)

I have TB client v91. I use a company Zimbra email server for my email. I have a TB account setup for IMAP to this Zimbra email server. I can view email via my PC, a browser, or my iPhone. All my email is synchronized on the Zimbra server which my TB client and iPhone connect to. My TB calendar is different, as it is the main calendar. I post events to this calendar.

When I create a new calendar and point it to the Zimbra server (and call it "Business Calendar", with the proper credentials, I can create an event on Zimbra that will eventually appear on my TB client. However, if I create an event on my TB client to my "Home" calendar it doesn't appear on the Zimbra calendar (which doesn't show on a browser nor my iPhone. If, however, I create the event on my TB client to the "Business Calendar" calendar then this does show up on Zimbra. Clicking the Synchronize Calendars option in the right-click menu doesn't do anything.

Should I really not maintain a "Home" calendar at all, if I want my calendar available to my other devices, kind of like my email is? How would backups work? Right now my TB "profile" is kept on a NAS drive, which is backed up (along with a lot of other profiles) every night.

Stillet af Bill for for 3 måneder siden

Besvaret af Matt for for 2 måneder siden

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Thunderbird Version 91.6.1 (64-bit), calendar - Error code; MODIFICATION_FAILED.jpg

I made a change to an every-day reminder and saved the change. This resulted in _lots_ of occurrences of this reminder (? going back the the date it was first created ?)… (læs mere)

I made a change to an every-day reminder and saved the change. This resulted in _lots_ of occurrences of this reminder (? going back the the date it was first created ?). With one 'Dismiss' click, the mass of them disappeared. But one remained. And this morning I had another one, which dismissed normally. But I can't 'Dismiss' this one. I even tried Editing & Deleting it, but that didn't help. This error has occurred occasionally before. Maybe, in time, it will go away ... or not ... or come back. Annoying! HELP!!

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TB91 Google's universal contacts birthday-calendar CalDAV URL comes with an 'credentials not accepted' error

I'm getting an 'credentials not accepted' error when connecting my Google's universal contacts/birthday-calendar with CalDAV. This error occurred after upgrading Thunderb… (læs mere)

I'm getting an 'credentials not accepted' error when connecting my Google's universal contacts/birthday-calendar with CalDAV. This error occurred after upgrading Thunderbird to version 91.x.x in previous versions, maybe even an early version of 91.x.x I had no problem connecting the birthday calendar. All other (Google) calendars (also using CalDAV) work fine. I have this problem on two PC's both running Dutch Thunderbird 91-last version under Dutch Windows 10 Home-edition, also witl all the latest updates installed.

Steps to reproduce: Subscribe to the birthday calendar of my Google account. Note: As I'm using the Dutch localized versions, my translations can be different from the English menu-items.

Preparation in Google:

  • In your web-browser look up your Google 'Calendar-ID' (aka calid) which can be found in the online settings menu in Google calendar at: https://calendar.google.com/

Look for it in the 'Integrate calendar' section. (In Dutch: Zoek het Google 'Agenda-ID' op in het online 'Instellingen'-menu van Google agenda, te vinden onder de sectie: 'Agenda integreren'.);

in which <Calendar-ID> is your Google Calendar-ID in the steps below. More information at: https://developers.google.com/calendar/caldav/v2/guide

  • Note: Google's birthday calendars all have the same generic/universal 'Calendar-ID' and therefore URL. They are uniquely identified by the username (Gmail-address) logging in.

Steps in thunderbird for adding the BIRTHDAY calendar:

  1. Create new calendar;
  2. Select 'On the network', next;
  3. Input:
  1. Click: 'Search calendar' and provide your password when asked.

Actual results: The screen returns with an 'credentials not accepted' error. Not connecting to the birthday calendar. (The error in Dutch: 'De ingevoerde referenties werden niet geaccepteerd. Controleer uw instellingen'.) Screenshot included.

Expected results: Connecting my birthday calendar in Thunderbird.

What I did/also tried:

  • I removed all my Google calendars and had no issue reconnecting them again. Except for the birthday-calendar;
  • I tried to put the birthday-calendar in read only mode by adding '.readonly' at the end of the URL. See the links provided in the preparation;
  • Turned off all my addons with no effect;
  • I reinstalled Thunderbird on one of my PC's, actually I reinstalled the full PC. Without result;
  • Posted bug ID 1746395 without result.

I checked.. * Questions:

* Bugs:

  • 1682177 connecting to two birthday calendars;
  • 1735525 connecting to a calendar shared with a Google account in Google itself;
  • 1737414 connecting to a Google calendar using a Google account without Gmail.

So I'm hoping anyone here can help. Thanks in advance!

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