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Hi Everyone!

I am currently on Thunderbird 115.10.1 (64-bit) and for a few days now, I can't open the calendar tab. The "Today Pane" is working and showing events though.

When going to "View" the items "Calendar" and "Tasks" are greyed out though.

Any idea on how to get the calendar back? The company will move us all to Exchange and Outlook soon, so I thought I might "survive", but it is pretty impractical have to open my calendars separately in the browser. You only notice how often you use something, when you don't have it. ;-)

Clocks went back one hour in Santiago, Chile last week and Thunderbird does not recognise the new time, although Windows (10) does.

The calendar line show the current time to be one hour ahead of the time on Windows; i.e., the Windows time has updated correctly, but the calendar time has not. Adding non-local events to the calendar causes them to be displayed one hour ahead of the correct time.

Changing the calendar setting to use the system timezone, or use America/Santiago has no effect that I can see.

Typing Date() in the error console of Thunderbird gives the correct time, as per Windows.

This also happened in the last time change here in Chile.

How can I fix the Calendar to see the same time as Thunderbird and Windows?

My work schedule revolves around the first Thursday of the month. Creating events recurring on the first Thursday or Friday is not a problem of course.

However, I am trying to set up recurring events /relative/ to the first Thursday, e.g. for the Monday of that week.

Can this be done in Thunderbird Calendar? Happy to do some manual editing of calendar files if that would help.

Thank you!

I'm setting up TB for the first time with multiple email and calendar accounts. Some are gmail / google, and others o365.

The primary TB account's calendar doesn't seem to be syncing fully. It's an o365. account. But the email is working.

I added an event on my Outlook for Android on my phone. Its appearing in OWA, and in New Outlook on my computer (so it did sync from mobile Android device to server, and from server to my New Outlook on the Windows desktop). But its not appearing in TB.

Not sure what to check or what the issue might be.

Also, I'd love to replace Outlook Android on my mobile with what I think is K-9. But can't get the same account referenced here to connect to the outbound server.

Welcome any help, and appreciate you all doing this collaborative work.

Hi folks, I am wondering if there is a way to change the behavior of the pop-up reminder window in Calendar. When I have missed reminders (e.g. a task set for today at 8am and it is now 9am), the task is visible in the reminder window that pops up every time a reminder is active. This is fine. But if there is a past reminder (not resolved), every time I add a new task (or edit a past task) to the calendar, the pop-up reminder window opens and comes to the front. Let me describe the example: I missed (knowingly) a reminder at 8AM. Now, at 9 AM I need to add 3 new tasks to the Calendar. After setting (or copying, editing) each new task, the pop-up reminder window is focused on the front. Can I change this behavior so that the reminder window only pop up when the reminder is due and not in the case a new task is set up or old one edited?

Profiles was bad enough, as Thunderbird can never open the zip file (the wording of the alternative method is gobbledegook, and there are no recognisable files if you attempt to decipher it). At least you can set all your email addresses up manually - you can't physically re-types five years of calendar entries. The infuriating this is that when you start the import, the calendar entries appear before your eyes for up to five seconds and then the program crashes ... again and again and again. I must have been trying this on and off for years now and still nobody has fixed it.

I have set up my google calendars in Thunderbird so I can have a shared work calendar.

The calendar has the "prefer client-side email scheduling" option enabled, and the correct email (my work email) is selected, yet invites are still being sent out from my gmail account.

Hello, in TB there is the option of displaying certain appointments or all appointments, e.g. in the next seven days (above the calendar). This also works perfectly on my Windows computer, but unfortunately not on my Linux computer (Ubuntu 22.04.4 LTS, TB 115.10.1 (64-bit)). In TB on Linux, no appointment is displayed as a list at all. What could be the reason for this? Thank you! Niels

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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?

After importing events from the old ics calendar into the existing CalDav calendar. TB sent invitations out to all attendees, even for past meetings. How to avoid this?

One of my calendars is not syncing. The same account (O365) also is not syncing the sub-folders.

Not sure what setting may be off.

I added some events from Outlook for Android on my phone sync'd to the same account. But they don't seem to appear, although they are on Outlook Web Access on the browser on my Windows machine.

There is no way to create a recurring task in Thunderbird - it seems like they are simply not supported. I've set the synchronization with my Google tasks but when trying to finish the recurring task through TB the synchronization error appears like I've updated the task on the server. Are there any plans to support recurring 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, 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.

I've been using Thunderbird for work for a few years and a few months ago my calendar integration with my Google Calendar stopped working. I've tried everything I can think of including re-installing calendars, but without success. My Thunderbird at home can still accept invites, but not on my work computer despite verifying that the calendar address and such is the same.

Initially, when I'd click 'Accept' on an invite, nothing would happen (ie no prompt, failure etc), the invite would just stay there without response. Now it's asking me if I want to link it with one of two different calendars I have, both of which I've verified under the calendar on Thunderbird that it isn't associated with an email address (has the yellow bar at the top saying if you want to use this calendar to store invitations you need to associate with an email address).

I can't think of what to do for next steps for troubleshooting, any thoughts?

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.

I am using the Provider for Google Calendar addon, but have always had the problem that when I flag an item on a Google Task list as Completed then synchronise with Thunderbird, the completion flag stays unchanged in Thunderbird unless I've also done an edit to the task text, or unsubscribed/resubscribed the whole calendar. I was hoping that when Google Tasks got combined/integrated with calendar Reminders a few weeks ago, it might have meant I could uninstall the addon and use Tasks with native Thunderbird CalDAV, but that doesn't seem to be the case. By which I mean, if I uninstall the Provider and try to subscribe in Thunderbird, only my calendars are visible for selection, not my task lists.

Is there a way of exposing the task lists to Thunderbird other than with the Provider, so I can try a way which will sync correctly?

Network calendars no longer seem to be working after upgrade to Thunderbird 102.4.1.

For example, my previously working calendar to this Google vCal calendar no longer syncs. I also had working read/write network CalDAV calendars that are now broken.

I tried deleting and recreating the calendars, but to no avail. Any help would be appreciated.

Here is some output captured from the Thunderbird error console:

services.settings: Failed to load last_modified.json: TypeError: NetworkError when attempting to fetch resource. Utils.jsm:330 Successfully loaded OpenPGP library librnp.so version 0.16+git20220124.f06439f7.MZLA from /usr/lib/thunderbird/librnp.so RNPLib.jsm:100:15 Calendar: Error updating timezones: [Exception... "Component returned failure code: 0x8052000b (NS_ERROR_FILE_CORRUPTED) [mozIStorageStatement.executeStep]" nsresult: "0x8052000b (NS_ERROR_FILE_CORRUPTED)" location: "JS frame :: resource:///modules/calendar/calStorageUpgrade.jsm :: ensureUpdatedTimezones :: line 481" data: no] DB Error database disk image is malformed calStorageUpgrade.jsm:493 Calendar: Can't create calendar for a492e639-69c4-4514-9de9-cc77d8e14adf (caldav, http://kolab.huott.org/iRony/calendars/tj.huot3%40huott.org/3eba43a8583db714): [Exception... "[JavaScript Error: "this.mOfflineStorage is null" {file: "resource:///modules/CalDavCalendar.jsm" line: 280}]'[JavaScript Error: "this.mOfflineStorage is null" {file: "resource:///modules/CalDavCalendar.jsm" line: 280}]' when calling method: [calIChangeLog::offlineStorage]" nsresult: "0x80570021 (NS_ERROR_XPC_JAVASCRIPT_ERROR_WITH_DETAILS)" location: "JS frame :: resource:///components/calCachedCalendar.js :: calCachedCalendar :: line 125" data: yes] CalCalendarManager.jsm:536 Calendar: Error updating timezones: [Exception... "Component returned failure code: 0x8052000b (NS_ERROR_FILE_CORRUPTED) [mozIStorageStatement.executeStep]" nsresult: "0x8052000b (NS_ERROR_FILE_CORRUPTED)" location: "JS frame :: resource:///modules/calendar/calStorageUpgrade.jsm :: ensureUpdatedTimezones :: line 481" data: no] DB Error database disk image is malformed calStorageUpgrade.jsm:493 Calendar: Can't create calendar for e0c464a8-9ddd-415f-a80d-0b6b275916e1 (caldav, http://kolab.huott.org/iRony/calendars/tj.huot3%40huott.org/14491c77551ebdeb): [Exception... "[JavaScript Error: "this.mOfflineStorage is null" {file: "resource:///modules/CalDavCalendar.jsm" line: 280}]'[JavaScript Error: "this.mOfflineStorage is null" {file: "resource:///modules/CalDavCalendar.jsm" line: 280}]' when calling method: [calIChangeLog::offlineStorage]" nsresult: "0x80570021 (NS_ERROR_XPC_JAVASCRIPT_ERROR_WITH_DETAILS)" location: "JS frame :: resource:///components/calCachedCalendar.js :: calCachedCalendar :: line 125" data: yes] CalCalendarManager.jsm:536 Calendar: Error updating timezones: [Exception... "Component returned failure code: 0x8052000b (NS_ERROR_FILE_CORRUPTED) [mozIStorageStatement.executeStep]" nsresult: "0x8052000b (NS_ERROR_FILE_CORRUPTED)" location: "JS frame :: resource:///modules/calendar/calStorageUpgrade.jsm :: ensureUpdatedTimezones :: line 481" data: no] DB Error database disk image is malformed calStorageUpgrade.jsm:493 Calendar: Can't create calendar for 2fb867d2-1cd0-47a6-a708-689483a2caf3 (caldav, http://kolab.huott.org/iRony/calendars/tj.huot3%40huott.org/14491c77551ebdeb): [Exception... "[JavaScript Error: "this.mOfflineStorage is null" {file: "resource:///modules/CalDavCalendar.jsm" line: 280}]'[JavaScript Error: "this.mOfflineStorage is null" {file: "resource:///modules/CalDavCalendar.jsm" line: 280}]' when calling method: [calIChangeLog::offlineStorage]" nsresult: "0x80570021 (NS_ERROR_XPC_JAVASCRIPT_ERROR_WITH_DETAILS)" location: "JS frame :: resource:///components/calCachedCalendar.js :: calCachedCalendar :: line 125" data: yes] CalCalendarManager.jsm:536 Calendar: Error updating timezones: [Exception... "Component returned failure code: 0x8052000b (NS_ERROR_FILE_CORRUPTED) [mozIStorageStatement.executeStep]" nsresult: "0x8052000b (NS_ERROR_FILE_CORRUPTED)" location: "JS frame :: resource:///modules/calendar/calStorageUpgrade.jsm :: ensureUpdatedTimezones :: line 481" data: no] DB Error database disk image is malformed calStorageUpgrade.jsm:493 Calendar: Can't create calendar for 6fadcc20-1e0e-4354-8a4a-448122a94f7c (caldav, http://kolab.huott.org/iRony/calendars/tj.huot3%40huott.org/3eba43a8583db714): [Exception... "[JavaScript Error: "this.mOfflineStorage is null" {file: "resource:///modules/CalDavCalendar.jsm" line: 280}]'[JavaScript Error: "this.mOfflineStorage is null" {file: "resource:///modules/CalDavCalendar.jsm" line: 280}]' when calling method: [calIChangeLog::offlineStorage]" nsresult: "0x80570021 (NS_ERROR_XPC_JAVASCRIPT_ERROR_WITH_DETAILS)" location: "JS frame :: resource:///components/calCachedCalendar.js :: calCachedCalendar :: line 125" data: yes] CalCalendarManager.jsm:536 Calendar: Error updating timezones: [Exception... "Component returned failure code: 0x8052000b (NS_ERROR_FILE_CORRUPTED) [mozIStorageStatement.executeStep]" nsresult: "0x8052000b (NS_ERROR_FILE_CORRUPTED)" location: "JS frame :: resource:///modules/calendar/calStorageUpgrade.jsm :: ensureUpdatedTimezones :: line 481" data: no] DB Error database disk image is malformed 2 calStorageUpgrade.jsm:493 Calendar: Can't create calendar for fc962630-e37e-4b2b-9999-ed3018434456 (caldav, http://kolab.huott.org/iRony/calendars/tj.huot3%40huott.org/14491c77551ebdeb): [Exception... "[JavaScript Error: "this.mOfflineStorage is null" {file: "resource:///modules/CalDavCalendar.jsm" line: 280}]'[JavaScript Error: "this.mOfflineStorage is null" {file: "resource:///modules/CalDavCalendar.jsm" line: 280}]' when calling method: [calIChangeLog::offlineStorage]" nsresult: "0x80570021 (NS_ERROR_XPC_JAVASCRIPT_ERROR_WITH_DETAILS)" location: "JS frame :: resource:///components/calCachedCalendar.js :: calCachedCalendar :: line 125" data: yes] CalCalendarManager.jsm:536 Calendar: Error updating timezones: [Exception... "Component returned failure code: 0x8052000b (NS_ERROR_FILE_CORRUPTED) [mozIStorageStatement.executeStep]" nsresult: "0x8052000b (NS_ERROR_FILE_CORRUPTED)" location: "JS frame :: resource:///modules/calendar/calStorageUpgrade.jsm :: ensureUpdatedTimezones :: line 481" data: no] DB Error database disk image is malformed calStorageUpgrade.jsm:493 Found 145 public keys and 4 secret keys (4 protected, 0 unprotected) RNPLib.jsm:301:15 Successfully loaded optional OpenPGP library libgpgme.so.11 from system's standard library locations GPGMELib.jsm:69:13 gpgme version: 1.16.0-unknown GPGMELib.jsm:241:15 Trying to load /usr/lib/thunderbird/libotr.so OTRLib.jsm:64:11 Trying to load libotr.so from system's standard library locations OTRLib.jsm:64:11 Trying to load libotr.so.5 from system's standard library locations OTRLib.jsm:64:11 Trying to load libotr.so from system's standard library locations OTRLib.jsm:64:11 Error: Cannot load required OTR library

   loadExternalOTRLib resource:///modules/OTRLib.jsm:109
   init resource:///modules/OTRLib.jsm:115
   once resource:///modules/OTR.jsm:118
   init resource:///modules/OTR.jsm:139
   init resource:///modules/OTRUI.jsm:256
   nsIPrompt_promptPassword resource:///modules/MsgAsyncPrompter.jsm:621
   promptPassword resource:///modules/MsgAsyncPrompter.jsm:389
   _promiseAuthPrompt resource:///modules/MsgAsyncPrompter.jsm:54
   _promiseAuthPrompt resource:///modules/MsgAsyncPrompter.jsm:52
   run resource:///modules/MsgAsyncPrompter.jsm:77

OTR.jsm:127:15 Calendar: [calICSService] Error in parser worker: [object Object] calICSService.js:588 Calendar: Error Parsing ICS: 2147500037 CalIcsParser.jsm:146 carddav.sync: Sync with server failed. CardDAVDirectory.jsm:645:11 This page is in Quirks Mode. Page layout may be impacted. For Standards Mode use “”. 60 calItemBase.js:431:30 TypeError: obj is null calCachedCalendar.js:921:9 TypeError: obj is null calCachedCalendar.js:921:9 This page is in Quirks Mode. Page layout may be impacted. For Standards Mode use “”. 162 calItemBase.js:431:30 TypeError: obj is null calCachedCalendar.js:921:9 TypeError: obj is null calCachedCalendar.js:921:9 Uncaught (in promise) Exception { name: "NS_ERROR_XPC_JAVASCRIPT_ERROR_WITH_DETAILS", message: "[JavaScript Error: \"obj is null\" {file: \"resource:///components/calCachedCalendar.js\" line: 921}]'[JavaScript Error: \"obj is null\" {file: \"resource:///components/calCachedCalendar.js\" line: 921}]' when calling method: [calICalendar::getItems]", result: 2153185313, filename: "chrome://calendar/content/widgets/calendar-filter.js", lineNumber: 967, columnNumber: 0, data: XPCWrappedNative_NoHelper, stack: "getItems@chrome://calendar/content/widgets/calendar-filter.js:967:17\n#refreshCalendar@chrome://calendar/content/widgets/calendar-filter.js:1234:60\nonLoad@chrome://calendar/content/widgets/calendar-filter.js:1283:37\nnotify@resource:///modules/calendar/utils/calDataUtils.jsm:38:23\nnotifyCalendarObservers@resource:///modules/CalCalendarManager.jsm:619:29\nonLoad@resource:///modules/CalCalendarManager.jsm:657:24\nnotify@resource:///modules/calendar/utils/calDataUtils.jsm:38:23\nnotify@resource:///modules/calendar/utils/calDataUtils.jsm:65:18\nonLoad@resource:///components/calCachedCalendar.js:77:23\n", location: XPCWrappedNative_NoHelper } calendar-filter.js:967 Uncaught (in promise) Exception { name: "NS_ERROR_XPC_JAVASCRIPT_ERROR_WITH_DETAILS", message: "[JavaScript Error: \"obj is null\" {file: \"resource:///components/calCachedCalendar.js\" line: 921}]'[JavaScript Error: \"obj is null\" {file: \"resource:///components/calCachedCalendar.js\" line: 921}]' when calling method: [calICalendar::getItems]", result: 2153185313, filename: "chrome://calendar/content/widgets/calendar-minimonth.js", lineNumber: 818, columnNumber: 0, data: XPCWrappedNative_NoHelper, stack: "getItems@chrome://calendar/content/widgets/calendar-minimonth.js:818:18\nonLoad@chrome://calendar/content/widgets/calendar-minimonth.js:419:12\ngetInterfaceProxy/get/<@chrome://global/content/customElements.js:696:35\nnotify@resource:///modules/calendar/utils/calDataUtils.jsm:38:23\nnotify@resource:///modules/calendar/utils/calDataUtils.jsm:65:18\nonLoad@resource:///modules/CalCompositeCalendar.jsm:33:34\nnotify@resource:///modules/calendar/utils/calDataUtils.jsm:38:23\nnotify@resource:///modules/calendar/utils/calDataUtils.jsm:65:18\nonLoad@resource:///components/calCachedCalendar.js:77:23\n", location: XPCWrappedNative_NoHelper } calendar-minimonth.js:818 Uncaught (in promise) Exception { name: "NS_ERROR_XPC_JAVASCRIPT_ERROR_WITH_DETAILS", message: "[JavaScript Error: \"obj is null\" {file: \"resource:///components/calCachedCalendar.js\" line: 921}]'[JavaScript Error: \"obj is null\" {file: \"resource:///components/calCachedCalendar.js\" line: 921}]' when calling method: [calICalendar::getItems]", result: 2153185313, filename: "chrome://calendar/content/widgets/calendar-filter.js", lineNumber: 967, columnNumber: 0, data: XPCWrappedNative_NoHelper, stack: "getItems@chrome://calendar/content/widgets/calendar-filter.js:967:17\n#refreshCalendar@chrome://calendar/content/widgets/calendar-filter.js:1234:60\nonLoad@chrome://calendar/content/widgets/calendar-filter.js:1283:37\nnotify@resource:///modules/calendar/utils/calDataUtils.jsm:38:23\nnotifyCalendarObservers@resource:///modules/CalCalendarManager.jsm:619:29\nonLoad@resource:///modules/CalCalendarManager.jsm:657:24\nnotify@resource:///modules/calendar/utils/calDataUtils.jsm:38:23\nnotify@resource:///modules/calendar/utils/calDataUtils.jsm:65:18\nonLoad@resource:///components/calCachedCalendar.js:77:23\n", location: XPCWrappedNative_NoHelper } calendar-filter.js:967 Uncaught (in promise) Exception { name: "NS_ERROR_XPC_JAVASCRIPT_ERROR_WITH_DETAILS", message: "[JavaScript Error: \"obj is null\" {file: \"resource:///components/calCachedCalendar.js\" line: 921}]'[JavaScript Error: \"obj is null\" {file: \"resource:///components/calCachedCalendar.js\" line: 921}]' when calling method: [calICalendar::getItems]", result: 2153185313, filename: "chrome://calendar/content/widgets/calendar-minimonth.js", lineNumber: 818, columnNumber: 0, data: XPCWrappedNative_NoHelper, stack: "getItems@chrome://calendar/content/widgets/calendar-minimonth.js:818:18\nonLoad@chrome://calendar/content/widgets/calendar-minimonth.js:419:12\ngetInterfaceProxy/get/<@chrome://global/content/customElements.js:696:35\nnotify@resource:///modules/calendar/utils/calDataUtils.jsm:38:23\nnotify@resource:///modules/calendar/utils/calDataUtils.jsm:65:18\nonLoad@resource:///modules/CalCompositeCalendar.jsm:33:34\nnotify@resource:///modules/calendar/utils/calDataUtils.jsm:38:23\nnotify@resource:///modules/calendar/utils/calDataUtils.jsm:65:18\nonLoad@resource:///components/calCachedCalendar.js:77:23\n", location: XPCWrappedNative_NoHelper } calendar-minimonth.js:818 Calendar: [calICSService] Error in parser worker: [object Object] calICSService.js:588 Calendar: Error Parsing ICS: 2147500037 CalIcsParser.jsm:146 TypeError: obj is null 4 calCachedCalendar.js:921:9 Uncaught (in promise) Exception { name: "NS_ERROR_XPC_JAVASCRIPT_ERROR_WITH_DETAILS", message: "[JavaScript Error: \"obj is null\" {file: \"resource:///components/calCachedCalendar.js\" line: 921}]'[JavaScript Error: \"obj is null\" {file: \"resource:///components/calCachedCalendar.js\" line: 921}]' when calling method: [calICalendar::getItems]", result: 2153185313, filename: "resource:///modules/CalCompositeCalendar.jsm", lineNumber: 369, columnNumber: 0, data: XPCWrappedNative_NoHelper, stack: "start@resource:///modules/CalCompositeCalendar.jsm:369:24\n", location: XPCWrappedNative_NoHelper } 4 CalCompositeCalendar.jsm:369 This page is in Quirks Mode. Page layout may be impacted. For Standards Mode use “”. Troubleshoot.jsm:651:30 WebGL warning: <Create>: WebglAllowWindowsNativeGl:false restricts context creation on this system. Troubleshoot.jsm:680:21 Failed to create WebGL context: WebGL creation failed:

• WebglAllowWindowsNativeGl:false restricts context creation on this system. ()
• Exhausted GL driver options. (FEATURE_FAILURE_WEBGL_EXHAUSTED_DRIVERS) Troubleshoot.jsm:680:21

WebGL warning: <Create>: AllowWebgl2:false restricts context creation on this system. Troubleshoot.jsm:680:21 Failed to create WebGL context: WebGL creation failed:

• AllowWebgl2:false restricts context creation on this system. () Troubleshoot.jsm:680:21

This page is in Quirks Mode. Page layout may be impacted. For Standards Mode use “”. MsgComposeCommands.js:10566:14 This page is in Quirks Mode. Page layout may be impacted. For Standards Mode use “”. 3 blank This page is in Quirks Mode. Page layout may be impacted. For Standards Mode use “”. {516f89af-5ad1-4152-a904-3c3b1b3697f6} This page is in Quirks Mode. Page layout may be impacted. For Standards Mode use “”. blank This page is in Quirks Mode. Page layout may be impacted. For Standards Mode use “”. 111 calItemBase.js:431:30 TypeError: obj is null calCachedCalendar.js:921:9 TypeError: obj is null calCachedCalendar.js:921:9 This page is in Quirks Mode. Page layout may be impacted. For Standards Mode use “”. 162 calItemBase.js:431:30 TypeError: obj is null calCachedCalendar.js:921:9 TypeError: obj is null calCachedCalendar.js:921:9 Uncaught (in promise) Exception { name: "NS_ERROR_XPC_JAVASCRIPT_ERROR_WITH_DETAILS", message: "[JavaScript Error: \"obj is null\" {file: \"resource:///components/calCachedCalendar.js\" line: 921}]'[JavaScript Error: \"obj is null\" {file: \"resource:///components/calCachedCalendar.js\" line: 921}]' when calling method: [calICalendar::getItems]", result: 2153185313, filename: "chrome://calendar/content/widgets/calendar-filter.js", lineNumber: 967, columnNumber: 0, data: XPCWrappedNative_NoHelper, stack: "getItems@chrome://calendar/content/widgets/calendar-filter.js:967:17\n#refreshCalendar@chrome://calendar/content/widgets/calendar-filter.js:1234:60\nonLoad@chrome://calendar/content/widgets/calendar-filter.js:1283:37\nnotify@resource:///modules/calendar/utils/calDataUtils.jsm:38:23\nnotifyCalendarObservers@resource:///modules/CalCalendarManager.jsm:619:29\nonLoad@resource:///modules/CalCalendarManager.jsm:657:24\nnotify@resource:///modules/calendar/utils/calDataUtils.jsm:38:23\nnotify@resource:///modules/calendar/utils/calDataUtils.jsm:65:18\nonLoad@resource:///components/calCachedCalendar.js:77:23\n", location: XPCWrappedNative_NoHelper } calendar-filter.js:967 Uncaught (in promise) Exception { name: "NS_ERROR_XPC_JAVASCRIPT_ERROR_WITH_DETAILS", message: "[JavaScript Error: \"obj is null\" {file: \"resource:///components/calCachedCalendar.js\" line: 921}]'[JavaScript Error: \"obj is null\" {file: \"resource:///components/calCachedCalendar.js\" line: 921}]' when calling method: [calICalendar::getItems]", result: 2153185313, filename: "chrome://calendar/content/widgets/calendar-minimonth.js", lineNumber: 818, columnNumber: 0, data: XPCWrappedNative_NoHelper, stack: "getItems@chrome://calendar/content/widgets/calendar-minimonth.js:818:18\nonLoad@chrome://calendar/content/widgets/calendar-minimonth.js:419:12\ngetInterfaceProxy/get/<@chrome://global/content/customElements.js:696:35\nnotify@resource:///modules/calendar/utils/calDataUtils.jsm:38:23\nnotify@resource:///modules/calendar/utils/calDataUtils.jsm:65:18\nonLoad@resource:///modules/CalCompositeCalendar.jsm:33:34\nnotify@resource:///modules/calendar/utils/calDataUtils.jsm:38:23\nnotify@resource:///modules/calendar/utils/calDataUtils.jsm:65:18\nonLoad@resource:///components/calCachedCalendar.js:77:23\n", location: XPCWrappedNative_NoHelper } calendar-minimonth.js:818 Uncaught (in promise) Exception { name: "NS_ERROR_XPC_JAVASCRIPT_ERROR_WITH_DETAILS", message: "[JavaScript Error: \"obj is null\" {file: \"resource:///components/calCachedCalendar.js\" line: 921}]'[JavaScript Error: \"obj is null\" {file: \"resource:///components/calCachedCalendar.js\" line: 921}]' when calling method: [calICalendar::getItems]", result: 2153185313, filename: "chrome://calendar/content/widgets/calendar-filter.js", lineNumber: 967, columnNumber: 0, data: XPCWrappedNative_NoHelper, stack: "getItems@chrome://calendar/content/widgets/calendar-filter.js:967:17\n#refreshCalendar@chrome://calendar/content/widgets/calendar-filter.js:1234:60\nonLoad@chrome://calendar/content/widgets/calendar-filter.js:1283:37\nnotify@resource:///modules/calendar/utils/calDataUtils.jsm:38:23\nnotifyCalendarObservers@resource:///modules/CalCalendarManager.jsm:619:29\nonLoad@resource:///modules/CalCalendarManager.jsm:657:24\nnotify@resource:///modules/calendar/utils/calDataUtils.jsm:38:23\nnotify@resource:///modules/calendar/utils/calDataUtils.jsm:65:18\nonLoad@resource:///components/calCachedCalendar.js:77:23\n", location: XPCWrappedNative_NoHelper } calendar-filter.js:967 Uncaught (in promise) Exception { name: "NS_ERROR_XPC_JAVASCRIPT_ERROR_WITH_DETAILS", message: "[JavaScript Error: \"obj is null\" {file: \"resource:///components/calCachedCalendar.js\" line: 921}]'[JavaScript Error: \"obj is null\" {file: \"resource:///components/calCachedCalendar.js\" line: 921}]' when calling method: [calICalendar::getItems]", result: 2153185313, filename: "chrome://calendar/content/widgets/calendar-minimonth.js", lineNumber: 818, columnNumber: 0, data: XPCWrappedNative_NoHelper, stack: "getItems@chrome://calendar/content/widgets/calendar-minimonth.js:818:18\nonLoad@chrome://calendar/content/widgets/calendar-minimonth.js:419:12\ngetInterfaceProxy/get/<@chrome://global/content/customElements.js:696:35\nnotify@resource:///modules/calendar/utils/calDataUtils.jsm:38:23\nnotify@resource:///modules/calendar/utils/calDataUtils.jsm:65:18\nonLoad@resource:///modules/CalCompositeCalendar.jsm:33:34\nnotify@resource:///modules/calendar/utils/calDataUtils.jsm:38:23\nnotify@resource:///modules/calendar/utils/calDataUtils.jsm:65:18\nonLoad@resource:///components/calCachedCalendar.js:77:23\n", location: XPCWrappedNative_NoHelper } calendar-minimonth.js:818 Calendar: [calICSService] Error in parser worker: [object Object] calICSService.js:588 Calendar: Error Parsing ICS: 2147500037 CalIcsParser.jsm:146 TypeError: obj is null 4 calCachedCalendar.js:921:9 Uncaught (in promise) Exception { name: "NS_ERROR_XPC_JAVASCRIPT_ERROR_WITH_DETAILS", message: "[JavaScript Error: \"obj is null\" {file: \"resource:///components/calCachedCalendar.js\" line: 921}]'[JavaScript Error: \"obj is null\" {file: \"resource:///components/calCachedCalendar.js\" line: 921}]' when calling method: [calICalendar::getItems]", result: 2153185313, filename: "resource:///modules/CalCompositeCalendar.jsm", lineNumber: 369, columnNumber: 0, data: XPCWrappedNative_NoHelper, stack: "start@resource:///modules/CalCompositeCalendar.jsm:369:24\n", location: XPCWrappedNative_NoHelper } 4 CalCompositeCalendar.jsm:369

Hi, I've searched a lot here and on other websites. I want to integrate the thunderbird calendar with the outlook.com calendar, not the Microsoft Outlook calendar. How to do so? I did publish the .ics file from outlook.com settings but do not know what to do now. Really lost. Please advice. Thanks Mohamed

I'm using an old, no longer supported add-on called Reminderfox that saves its contents in ics format. I used to be able to import this to Google calendar and Thunderbird but for some reason they and also Microsoft Outlook won't now import the ics file. They either give an error as in Thunderbird's case (error, no items to import) or just remain greyed out so I can't do anything else as in Google and Microsoft's case. I have submitted the ics file to an ics verifier online and it says there are no errors. I have also looked at the file in notepad and can't see any obvious errors, although I'm not fully conversant with the ics format. Can anyone suggest what the problem might be or anything else I can try please?