Hi,
I've been using CalDAV on my Synology server to synch between my desktop Thunderbird instance and handheld without problems.
I recently added my laptop as a third pla… (อ่านเพิ่มเติม)
Hi,
I've been using CalDAV on my Synology server to synch between my desktop Thunderbird instance and handheld without problems.
I recently added my laptop as a third platform which synched fine. However now I am working offline (I have an Internet connection but no remote access to Synology), Thunderbird repeatedly comes up with the message:
An error occurred when writing to the calendar My Calendar! Please see below for more information.
Error code: MODIFICATION_FAILED.
The error message is maximally annoying as it steals focus from all Thunderbird windows then hides in the background, making it look like the app has disappeared entirely.
I have Offline Support checked in the calendar properties. Platform: Windows 11.
I've tried deleting calender_date\cache.sqlte as suggested elsewhere but that makes all my appointment disappear.