SDK 1.0.3719.77, for Runtime 144 (Jan. 27, 2026)

Release notes for Microsoft Edge WebView2 SDK, release date: Jan. 27, 2026.

NuGet package for WebView2 SDK 1.0.3719.77

For full API compatibility, this Release version of the WebView2 SDK requires WebView2 Runtime 144.0.3719.77 (Jan. 27, 2026) or later.

Detailed contents:

• Promotions to Phase 3 (Stable in Release)
  • Customize the drag and drop behavior (DragStarting API)
• Bug fixes
• See also

Promotions to Phase 3 (Stable in Release)

The following APIs have been promoted from Phase 2: Stable in Prerelease, to Phase 3: Stable in Release, and are now included in this Release SDK.

Customize the drag and drop behavior (DragStarting API)

The DragStarting API overrides the default drag and drop behavior when running in visual hosting mode. The DragStarting event notifies your app when the user starts a drag operation in the WebView2, and provides the state that's necessary to override the default WebView2 drag operation with your own logic.

• Use DragStarting on the ICoreWebView2CompositionController5 to add an event handler that's invoked when the drag operation is starting.
• Use ICoreWebView2DragStartingEventArgs to start your own drag operation.
  • Use the GetDeferral method to execute any async drag logic and call back into the WebView at a later time.
  • Use the Handled property to let the WebView2 know whether to use its own drag logic.

Previous phase: Customize the drag and drop behavior (DragStarting API) in SDK 1.0.3712-prerelease, for Runtime 144 (Dec. 8, 2025).

.NET/C#

N/A

WinRT/C#

N/A

Win32/C++

• ICoreWebView2CompositionController5
  • ICoreWebView2CompositionController5::add_DragStarting
  • ICoreWebView2CompositionController5::remove_DragStarting

• ICoreWebView2CompositionControllerInterop3

  • ICoreWebView2CompositionControllerInterop3::add_DragStarting
  • ICoreWebView2CompositionControllerInterop3::remove_DragStarting

• ICoreWebView2DragStartingEventArgs

  • ICoreWebView2DragStartingEventArgs::get_AllowedDropEffects
  • ICoreWebView2DragStartingEventArgs::get_Data
  • ICoreWebView2DragStartingEventArgs::get_Handled
  • ICoreWebView2DragStartingEventArgs::get_Position
  • ICoreWebView2DragStartingEventArgs::GetDeferral
  • ICoreWebView2DragStartingEventArgs::put_Handled

• ICoreWebView2DragStartingEventHandler

Bug fixes

• Added the article Performance best practices for WebView2 apps, about how to improve the startup speed, memory usage, and responsiveness of a WebView2 app.

See also

• Runtime 144.0.3719.77 (Jan. 27, 2026)
• Release notes for WebView2
  • Release notes for the WebView2 Runtime
  • Release notes for WebView2 SDKs