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Runtime 149.0.4022.49 (Jun. 11, 2026)

Release notes for Microsoft Edge WebView2 Runtime, release date: Jun. 11, 2026.

Bug fixes

  • Mapped TERMINATION_STATUS_LAUNCH_FAILED_OS_POLICY to kLaunchFailed.

  • Updated the failure reason classification to OOM, for a process that's been killed to reclaim memory.

  • Added trusted origin check during host object access.

  • Fixed the Print dialog's dropdown lists not being selected in WebView2CompositionControl. (Issue #5195)

  • Fixed double character in UWP.

  • Fixed the Caption controls background color setting API. After this change, to close your app, the app will also need to intercept the Close call and handle the call itself.

  • Fixed forwarding of network events for iframe, where the iframe had its own isolated CDP session.

  • Improved error handling when Post Message (such as CoreWebView2ServiceWorker.PostWebMessageAsJson or chrome.webview.postMessage) is called on a service worker.

  • Reduced string allocations in GetDefaultHostAppExeName.

  • Fixed an updater issue where the currently used WebView2 Runtime is deleted after installing a new version, causing a crash during new controller creation in an already running app.

See also

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