
Cannot Dismiss or Snooze Notifications for One Particular Event
I have one event, a birthday, that I cannot dismiss or snooze the reminder for, thus far I have:
- deleted and re-created the Google Contact
- removed and re-added the birthday from the Contact
- deleted the contents of calendar-data
- removed and re-added Gmail and Google Calendars
I am have Thunderbird 141.0 (64-bit) running on Windows 11 Home 10.0.26100 Build 26100. I am using Thunderbird's native capability to support Google Calendar and have no add-ons installed.
The following related error message in the Error Console:
-- BEGIN -- CalDAV: Unexpected status modifying item to Google: 400 BEGIN:VCALENDAR PRODID:-//Mozilla.org/NONSGML Mozilla Calendar V1.1//EN VERSION:2.0 BEGIN:VEVENT CREATED:20250817T050742Z LAST-MODIFIED:20250817T205139Z DTSTAMP:20250817T205139Z UID:tgdc8vaqt39s3eqjl2bl6qpmjo@google.com SUMMARY:Name birthday STATUS:CONFIRMED ORGANIZER;CN=Unknown Organizer:mailto:unknownorganizer@calendar.google.com ATTENDEE;CN=address@gmail.com;PARTSTAT=ACCEPTED;CUTYPE=INDIVIDUAL;ROLE=RE
Q-PARTICIPANT;X-NUM-GUESTS=0:mailto:address@gmail.com
RRULE:FREQ=YEARLY X-MOZ-LASTACK:20250817T205139Z DTSTART;VALUE=DATE:19360817 DTEND;VALUE=DATE:19360818 CLASS:PRIVATE SEQUENCE:0 TRANSP:TRANSPARENT X-MOZ-GENERATION:1 BEGIN:VALARM ACTION:DISPLAY TRIGGER:PT9H DESCRIPTION:This is an event reminder END:VALARM BEGIN:VALARM ACTION:DISPLAY TRIGGER:-P6DT15H DESCRIPTION:This is an event reminder END:VALARM END:VEVENT END:VCALENDAR -- END --