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Cannot dismiss reminder or set the snooze. Get the following:

Status Code: 2147500037, The request cannot be processed.

An error occurred when writing to the calendar charles.novak@gmail.com! Please see below for more information.

Server Replied with 400 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.

When trying to edit the Description of a Calendar Event the description window only shows part of the first line. I am unable to scroll or resize the text box. Windows 11 64 bit, Thunderbird 1.28 and Thunderbird Eclipse 140.0.1 - 64 bit

I am trying to import a ics file into thunderbird. If I specify a local calendar as the destination calendar, the import works. However, if I specify a caldav-connected calendar as the destination, the import starts but never completes, and I always see an import status of 0%. I have tried importing into calendars from different caldav providers, but in all cases, the import fails. I would greatly appreciate your feedback. For me, this import is a convenient way to semi-automatically populate a web calendar.

I have just had a scam calendar entry added without me accepting the invite or an email requesting it.

The entry has clickable links - obviously scam/spam

How could that happen?

Hello, I probably desactivated by mistake the reminder pop up window for event and tasks in the agenda. So that i do not get any warning 1 day before the event as specified in the creation of the event. How can i re-instate this alarm ? Tks brds

When I add/edit a calendar event, it only allows for 1 reminder. I often set up multiple reminders for an event, especially if it is scheduled for several weeks in the future. I want to set up a reminder for '2 weeks before', '2 days before', and '12 hours before', but I can't find where to add the additional reminders.

I use TB as a personal home email client & calendar. All the prenamed Category labels for events are primarily oriented to business use. If there a way to rename the Categories and apply a color that I want?

I’m using Thunderbird on a MacBook Air M1 2020 with 103 GB of free disk space and 8 GB memory. I’m using it primarily as a calendar and task management system because I like the reminder options in Thunderbird. I use local calendars. Thunderbird auto-updated to V 128.5.2 from V115.18.0 on 12/17/24 (I didn’t realize auto-update was set) and since then gets hung every time a reminder comes up and I either dismiss it or snooze it. I have to Force Quit Thunderbird to get the spinning beach ball to go away. I backup my computer weekly using Time Machine and tried restoring to 115.8.0, but was unable to restore my profile with my current calendar items on it. I got an error message saying that the new version of my profile (with my local calendars) is incompatible with Thunderbird V 115.8.0. Is there any way to get my current calendar info into an older version of Thunderbird, or better yet, create a fix so that it doesn’t get hung? If it's time for me to move to a different application for this use, just be honest. Thanks in advance for your advice and expertise!

Using Thunderbird 128.5.0esr (64-bit) on 128.5.0esr (64-bit). In calendar view, I see all my appointments with the background colour of the calendar they are in (see attached). In my inbox view, I have the Events tab open at the right. All day events have the background colour of the appropriate calendar, but ones with timings have a dot. (see attached). How do I make ALL calendar events have the background colour of the associated calendar in the mail events tab??

Hi,

Since upgrading to thunderbird 128.6.0esr, my shared google calendars no longer show any events.

The activity manager shows it is stuck trying to sync, but not going anywhere.

Onn checking the developer logs, the following messages are displayed.

Anybody else having this problem or know of a solution. (I have removed "CALDAV" and "TB SYNC" extensions - also installed "TB SYNC 4")

Thanks Paul

Developer Logs: 15:25:05.693 Calendar: XPCWrappedNative_NoHelper { QueryInterface: QueryInterface(), result: Getter, message: Getter, ERROR: 1, INTERNAL: 2, PERM: 3, ABORT: 4, BUSY: 5, LOCKED: 6, NOMEM: 7, … }

CalStorageDatabase.sys.mjs:247:15

15:25:05.696 [calCachedCalendar] replay action failed: <unknown>, uri=googleapi://????????/?calendar=???????, result=error executing async statement, operation=[xpconnect wrapped calIOperation]

I am trying to create a personal calendar as a checklist for chores. Is it possible to make a list of tasks without adding a time to each task? When I try to print the calendar, the time stamp takes a lot of space and is unnecessary for my purposes. Also, I have added birthdays/anniversaries/holidays to my calendar, and these also require an unnecessary time stamp. Is there a way to add these without an associated time?

Hi. Ubuntu Unity 24.04 Thunderbird 140.5

When creating a New Message, the top 5 lines are missing - i.e the “End: (U)” (end time) line is displayed at the top of the screen. The only way to enter the Title of the Event is to drag the window down. Also, the Event window CANNOT be resized. This has been happening for more than a year now. Can you help? Thanks, M...

Hello, Yesterday the Google calendar tab opened with a message and stupidly I didn't read it - I just closed the tab and thought I'd check it later. Then I realised I could neither dismiss TB calendar notifications or snooze them. Next I realised I could no longer add to the TB calendar or delete any items that were already in there. I'm not sure if there has been a recent update which may have brought this about but any help would be very much appreciated. Thank you.

I came into my home office this morning and started my Windows 10 machine from scratch (cold boot). I loaded Thunderbird and read and deleted some email. Then I went to enter a Task in the same calendar I always install Tasks in and it won't let me enter a new Task at all. The input field tells me to select a calendar that supports tasks. Well, I have! I open the Events and Messages menu option and the Enter Task command is grayed out. What the heck is going on? How can I get the ability to enter Tasks back?

I'm getting a little tired of dealing with all the issues in Thunderbird. I have spent hours trying to debug this with no success.

I have added my calendar to Thunderbird and it is syncing with Google but when I add a new event it only allows me to set one notification time. I have a standard notification of 30 minutes before something happens and in Google I can add additional notifications like a day before or a week before. I don't see that I can do that when I create the event in Thunderbird. Need to create all of my calendar events in my Google calendar?

I'm trying to create an event that start from time in PST, and end in China Standard Time. However, the date time selector doesn't seems to be aware with the timezone I selected and still prompt that I selecting wrong time.

I'm on the latest stable Thunderbird release, 138