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An error occurred when writing to the calendar <calName> / MODIFICATION_FAILED

Mark Foley
Mark Foley
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When trying to delete a recurring event from a user-owned calendar (not Google, not network ical) I get the message "An error occurred when writing to the calendar Susan's Calendar / Error code: MODIFICATION_FAILED"

In the error console I get the following 2 lines:

There has been an error reading data for calendar: Susan's Calendar. However, this error is believed to be minor, so the program calCalendarManager.js:969:13 will attempt to continue. Error code: 0x80004005. Description: ID is null for deleteItem

An error occured when writing to the calendar Susan's Calendar! Error code: MODIFICATION_FAILED. Description: calCalendarManager.js:966

Why am I getting this error and how do I delete this event?

When trying to delete a recurring event from a user-owned calendar (not Google, not network ical) I get the message "An error occurred when writing to the calendar Susan's Calendar / Error code: MODIFICATION_FAILED" In the error console I get the following 2 lines: There has been an error reading data for calendar: Susan's Calendar. However, this error is believed to be minor, so the program calCalendarManager.js:969:13 will attempt to continue. Error code: 0x80004005. Description: ID is null for deleteItem An error occured when writing to the calendar Susan's Calendar! Error code: MODIFICATION_FAILED. Description: calCalendarManager.js:966 Why am I getting this error and how do I delete this event?

Alle antwoorden (3)

Fabián Rodríguez
Fabián Rodríguez
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I've had this kind of error before, the only solution for me was to completely remove the calendar and reinstall it.

In my case I also had to export all events then delete the event from the exported file, then create the calendar again by importing the cleaned filed..

Mark Foley
Mark Foley Vraageigenaar
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That work and was pretty easy to do. Thanks!

Fabián Rodríguez
Fabián Rodríguez
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Thanks for letting me know! Don't forget to mark my post as the solution.