Release SDK 1.0.4258.31, for Runtime 154 (Sep. 28, 2026)

Release notes for Microsoft Edge WebView2 SDK, release date: Sep. 28, 2026.

NuGet package for WebView2 SDK 1.0.4258.31

For full API compatibility, this Release version of the WebView2 SDK requires WebView2 Runtime 154.0.4258.31 (Sep. 28, 2026) or later.

See also

• Prerelease SDK 1.0.4255-prerelease, for Runtime 154 (Sep. 11, 2026)
• Runtime 154.0.4258.31 (Sep. 28, 2026)
• Release notes for WebView2
  • Release notes for the WebView2 Runtime
  • Release notes for WebView2 SDKs