Merge pull request #4869 from MicrosoftDocs/main

beta 130.0.2849.43

edgeenterprise/microsoft-edge-relnote-beta-channel.md

@@ -19,6 +19,14 @@ These release notes provide information about new features and non-security upda
 > [!NOTE]
 > Microsoft Edge Web Platform constantly evolves to improve user experience, security, and privacy. To learn more, see [Site compatibility-impacting changes coming to Microsoft Edge](/microsoft-edge/web-platform/site-impacting-changes).
 
+## Version 130.0.2849.43: October 16, 2024
+
+Fixed various bugs and performance issues.
+
+### Announcements
+
+- **Cancel dialog for beforeunload event.** Microsoft Edge is changing the behavior of the cancel dialog for the `beforeunload` event in Microsoft Edge version 131. Starting in version 131, calling `event.preventDefault` in a `beforeunload` event handler won't prevent the dialog from being shown. Instead, `event.returnValue = ''` needs to be called in the `beforeunload` event handler to prevent the cancel dialog. The [BeforeunloadEventCancelByPreventDefaultEnabled](/deployedge/microsoft-edge-policies?branch=main&branchFallbackFrom=pr-en-us-4867#beforeunloadeventcancelbypreventdefaultenabled) policy is being obsoleted and will no longer work after Microsoft Edge version 130.
+
 ## Version 130.0.2849.35: October 11, 2024
 
 Fixed various bugs and performance issues, feature updates, and policy updates.