Release notes for Umbraco-CMS v17.9.0
Target release date: Thursday, December 10 2026
UI and UX updates
3
#24172 Documents: Show an error notification when moving a document fails
#24169 Notifications: Show an error when a notification handler cancels an operation without a message
#24042 Password reset: Show a friendly message when the reset email cannot be sent
Other
12
#24167 Extensions: Run user entry points only after the signed-in user has loaded
#24166 Notifications: Resolve onClose when the notification is dismissed or times out
#24165 Resources: Report a request aborted by a timeout signal as a cancellation
#24148 Validation: Render validation messages through sanitizeHTML, and use the backoffice message element for Block Grid areas
#23938 Documents: Create a deterministic property output (closes #23526, #23717)
#23930 List view: single-item bulk publish shows no error notification when it fails
#23933
Bulk actions: Do not announce a failed action as executed, allowing problems with single-item bulk operations to be reported (closes #23930)
#23788 Management API: Serve the data cache to consumers constructed mid-session
#23375 Scheduled Publishing: Schedule all selected languages at once