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64 changes: 63 additions & 1 deletion microsoft-edge/webview2/release-notes/index.md
Original file line number Diff line number Diff line change
Expand Up @@ -6,7 +6,7 @@ ms.author: msedgedevrel
ms.topic: conceptual
ms.service: microsoft-edge
ms.subservice: webview
ms.date: 05/05/2025
ms.date: 05/12/2025
---
# Release Notes for the WebView2 SDK

Expand Down Expand Up @@ -90,6 +90,68 @@ Use this API to manage iframe tracking on a page that contains multiple levels o
<!-- end of May 2025 Release SDK -->


<!-- May 2025 Prerelease SDK -->
<!-- ====================================================================== -->
## 1.0.3296-prerelease

Release Date: May 12, 2025

[NuGet package for WebView2 SDK 1.0.3296-prerelease](https://www.nuget.org/packages/Microsoft.Web.WebView2/1.0.3296-prerelease)

For full API compatibility, this Prerelease version of the WebView2 SDK requires the WebView2 Runtime that ships with Microsoft Edge version 137.0.3296.0 or higher.


<!-- ------------------------------ -->
#### Experimental APIs

No Experimental APIs have been added in this Prerelease SDK.


<!-- ------------------------------ -->
#### Promotions

The following APIs have been promoted from Experimental to Stable in this Prerelease SDK.


<!-- ---------- -->
###### Set default background color on WebView2 initialization (DefaultBackgroundColor API)

The DefaultBackgroundColor API allows users to set the `DefaultBackgroundColor` property at initialization. This prevents a disruptive white flash during the WebView2 loading process.

##### [.NET/C#](#tab/dotnetcsharp)

* `CoreWebView2ControllerOptions` Class:
* [CoreWebView2ControllerOptions.DefaultBackgroundColor Property](/dotnet/api/microsoft.web.webview2.core.corewebview2controlleroptions.defaultbackgroundcolor?view=webview2-dotnet-1.0.3296-prerelease&preserve-view=true)

##### [WinRT/C#](#tab/winrtcsharp)

* `CoreWebView2ControllerOptions` Class:
* [CoreWebView2ControllerOptions.DefaultBackgroundColor Property](/microsoft-edge/webview2/reference/winrt/microsoft_web_webview2_core/corewebview2controlleroptions?view=webview2-winrt-1.0.3296-prerelease&preserve-view=true#defaultbackgroundcolor)

##### [Win32/C++](#tab/win32cpp)

* [ICoreWebView2ControllerOptions3](/microsoft-edge/webview2/reference/win32/icorewebview2controlleroptions3?view=webview2-1.0.3296-prerelease&preserve-view=true)
* [ICoreWebView2ControllerOptions3::get_DefaultBackgroundColor](/microsoft-edge/webview2/reference/win32/icorewebview2controlleroptions3?view=webview2-1.0.3296-prerelease&preserve-view=true#get_defaultbackgroundcolor)
* [ICoreWebView2ControllerOptions3::put_DefaultBackgroundColor](/microsoft-edge/webview2/reference/win32/icorewebview2controlleroptions3?view=webview2-1.0.3296-prerelease&preserve-view=true#put_defaultbackgroundcolor)

---


<!-- ------------------------------ -->
#### Bug fixes


<!-- ---------- -->
###### Runtime-only

* Fixed the **Find** bar no longer appearing after the window is shifted.
* Fixed a bug where the app wasn't able to cancel navigation to login pages via the `NavigationStarting` event.
* Fixed an issue where downloads from within the default browser frame didn't complete. ([Issue #5196](https://github.com/MicrosoftEdge/WebView2Feedback/issues/5196))
* Fixed an issue where the pipe name was incorrectly returned, leading to a crash in some UWP apps.

<!-- end of May 2025 Prerelease SDK -->


<!-- Apr 2025 Release SDK -->
<!-- ====================================================================== -->
## 1.0.3179.45
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