Runtime 139.0.3405.78 (Aug. 11, 2025)

Release notes for Microsoft Edge WebView2 Runtime, release date: Aug. 11, 2025.

In addition to the following WebView2 Runtime improvements, you can also use the new web platform features from Microsoft Edge 139; see Microsoft Edge 139 web platform release notes (Aug. 2025).

Bug fixes

• Fixed a crash in Devtools on Windows Server and Windows 10.

See also

• Release SDK 1.0.3405.78, for Runtime 139 (Aug. 11, 2025)
• Release notes for WebView2
  • Release notes for the WebView2 Runtime
  • Release notes for WebView2 SDKs
• Microsoft Edge 139 web platform release notes (Aug. 2025)