---
title: "Breaking: #77765 - ExtJS notifications and dialogs removed"
manual: "TYPO3 Core Changelog"
version: "main"
permalink: "https://docs.typo3.org/permalink/changelog:breaking-77765"
source: "Changelog/8.4/Breaking-77765-ExtJSNotificationsAndDialogsRemoved.rst"
modified: "2026-09-14T09:47:36+00:00"
---

# Breaking: #77765 - ExtJS notifications and dialogs removed

See [forge#77765](https://forge.typo3.org/issues/77765)

## Description

ExtJS notifications with the ExtJS components `TYPO3.Window` and `TYPO3.Dialog` have been removed from the TYPO3 Core.

## Impact

Calling any of the JavaScript components above will result in a JavaScript error.

## Affected Installations

Any TYPO3 installations using custom extensions based on ExtJS.

## Migration

Use the JavaScript-based Modal and Dialog functionality that are part of the TYPO3 Core since v7.

For migration details [see the docs](https://docs.typo3.org/typo3cms/extensions/core/Changelog/7.2/Feature-66047-IntroduceJavascriptNotificationApi.html)