RelNotes for WebView2 SDK 148 (May 2026)

[mikehoffms]

Rendered article sections for review:

• Release notes for the WebView2 SDK > Prerelease SDK 1.0.4015-prerelease, for Runtime 149 (May 11, 2026)

  • /webview2/release-notes/index.md
  • Internal preview: https://review.learn.microsoft.com/microsoft-edge/webview2/release-notes/?branch=pr-en-us-3781#prerelease-sdk-104015-prerelease-for-runtime-149-may-11-2026
  • External preview:
  • Planned live: https://learn.microsoft.com/microsoft-edge/webview2/release-notes/#prerelease-sdk-104015-prerelease-for-runtime-149-may-11-2026
  • New section.
  • Moved year-old two sections to archive.md.

• Release notes for the WebView2 SDK > Release SDK 1.0.3967.48, for Runtime 148 (May 11, 2026)

  • /webview2/release-notes/index.md
  • Internal preview: https://review.learn.microsoft.com/microsoft-edge/webview2/release-notes/?branch=pr-en-us-3781#release-sdk-10396748-for-runtime-148-may-11-2026
  • External preview:
  • Planned live: https://learn.microsoft.com/microsoft-edge/webview2/release-notes/#release-sdk-10396748-for-runtime-148-may-11-2026
  • New section.

---

Incidental:

• Archived release notes for the WebView2 SDK

  • /webview2/release-notes/archive.md
  • Internal preview: https://review.learn.microsoft.com/microsoft-edge/webview2/release-notes/archive?branch=pr-en-us-3781
  • External preview:
  • Before/live: https://learn.microsoft.com/microsoft-edge/webview2/release-notes/archive
  • Archived Runtime 136 sections.

• Microsoft Edge 136 web platform release notes (May 2025) > WebView2

  • /web-platform/release-notes/136.md
  • Internal preview: https://review.learn.microsoft.com/microsoft-edge/web-platform/release-notes/136?branch=pr-en-us-3781#webview2
  • External preview:
  • Before/live: https://learn.microsoft.com/microsoft-edge/web-platform/release-notes/136#webview2
  • Link to archive.md not index.md.

AB#62134041

[Ju-MsGit]

LGTM - Dev

[learn-build-service-prod]

Learn Build status updates of commit e481191:

💡 Validation status: suggestions

File	Status	Preview URL	Details
microsoft-edge/webview2/release-notes/index.md	💡Suggestion	View	Details
microsoft-edge/web-platform/release-notes/136.md	✅Succeeded	View
microsoft-edge/webview2/release-notes/archive.md	✅Succeeded	View

microsoft-edge/webview2/release-notes/index.md

• Line 88, Column 3: [Suggestion: learn-site-link-broken - See documentation] Link '/dotnet/api/microsoft.web.webview2.core.corewebview2enhancedsecuritymodestate?view=webview2-dotnet-1.0.4015-prerelease&preserve-view=true' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 93, Column 6: [Suggestion: learn-site-link-broken - See documentation] Link '/dotnet/api/microsoft.web.webview2.core.corewebview2profile.enhancedsecuritymodestate?view=webview2-dotnet-1.0.4015-prerelease&preserve-view=true' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 97, Column 3: [Suggestion: learn-site-link-broken - See documentation] Link '/microsoft-edge/webview2/reference/winrt/microsoft_web_webview2_core/corewebview2enhancedsecuritymodestate?view=webview2-winrt-1.0.4015-prerelease&preserve-view=true' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 106, Column 3: [Suggestion: learn-site-link-broken - See documentation] Link '/microsoft-edge/webview2/reference/win32/icorewebview2experimentalprofile17?view=webview2-1.0.4015-prerelease&preserve-view=true' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 107, Column 5: [Suggestion: learn-site-link-broken - See documentation] Link '/microsoft-edge/webview2/reference/win32/icorewebview2experimentalprofile17?view=webview2-1.0.4015-prerelease&preserve-view=true#get_enhancedsecuritymodestate' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 108, Column 5: [Suggestion: learn-site-link-broken - See documentation] Link '/microsoft-edge/webview2/reference/win32/icorewebview2experimentalprofile17?view=webview2-1.0.4015-prerelease&preserve-view=true#put_enhancedsecuritymodestate' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 298, Column 3: [Suggestion: learn-site-link-broken - See documentation] Link '/microsoft-edge/webview2/reference/win32/icorewebview2_29?view=webview2-1.0.4015-prerelease&preserve-view=true' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 299, Column 5: [Suggestion: learn-site-link-broken - See documentation] Link '/microsoft-edge/webview2/reference/win32/icorewebview2_29?view=webview2-1.0.4015-prerelease&preserve-view=true#add_dedicatedworkercreated' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 300, Column 5: [Suggestion: learn-site-link-broken - See documentation] Link '/microsoft-edge/webview2/reference/win32/icorewebview2_29?view=webview2-1.0.4015-prerelease&preserve-view=true#remove_dedicatedworkercreated' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 303, Column 3: [Suggestion: learn-site-link-broken - See documentation] Link '/microsoft-edge/webview2/reference/win32/icorewebview2dedicatedworker?view=webview2-1.0.4015-prerelease&preserve-view=true' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 304, Column 5: [Suggestion: learn-site-link-broken - See documentation] Link '/microsoft-edge/webview2/reference/win32/icorewebview2dedicatedworker?view=webview2-1.0.4015-prerelease&preserve-view=true#add_dedicatedworkercreated' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 305, Column 5: [Suggestion: learn-site-link-broken - See documentation] Link '/microsoft-edge/webview2/reference/win32/icorewebview2dedicatedworker?view=webview2-1.0.4015-prerelease&preserve-view=true#add_destroying' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 306, Column 5: [Suggestion: learn-site-link-broken - See documentation] Link '/microsoft-edge/webview2/reference/win32/icorewebview2dedicatedworker?view=webview2-1.0.4015-prerelease&preserve-view=true#add_webmessagereceived' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 307, Column 5: [Suggestion: learn-site-link-broken - See documentation] Link '/microsoft-edge/webview2/reference/win32/icorewebview2dedicatedworker?view=webview2-1.0.4015-prerelease&preserve-view=true#get_scripturi' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 308, Column 5: [Suggestion: learn-site-link-broken - See documentation] Link '/microsoft-edge/webview2/reference/win32/icorewebview2dedicatedworker?view=webview2-1.0.4015-prerelease&preserve-view=true#postwebmessageasjson' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 309, Column 5: [Suggestion: learn-site-link-broken - See documentation] Link '/microsoft-edge/webview2/reference/win32/icorewebview2dedicatedworker?view=webview2-1.0.4015-prerelease&preserve-view=true#postwebmessageasstring' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 310, Column 5: [Suggestion: learn-site-link-broken - See documentation] Link '/microsoft-edge/webview2/reference/win32/icorewebview2dedicatedworker?view=webview2-1.0.4015-prerelease&preserve-view=true#remove_dedicatedworkercreated' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 311, Column 5: [Suggestion: learn-site-link-broken - See documentation] Link '/microsoft-edge/webview2/reference/win32/icorewebview2dedicatedworker?view=webview2-1.0.4015-prerelease&preserve-view=true#remove_destroying' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 312, Column 5: [Suggestion: learn-site-link-broken - See documentation] Link '/microsoft-edge/webview2/reference/win32/icorewebview2dedicatedworker?view=webview2-1.0.4015-prerelease&preserve-view=true#remove_webmessagereceived' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 315, Column 3: [Suggestion: learn-site-link-broken - See documentation] Link '/microsoft-edge/webview2/reference/win32/icorewebview2dedicatedworkercreatedeventargs?view=webview2-1.0.4015-prerelease&preserve-view=true' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 316, Column 5: [Suggestion: learn-site-link-broken - See documentation] Link '/microsoft-edge/webview2/reference/win32/icorewebview2dedicatedworkercreatedeventargs?view=webview2-1.0.4015-prerelease&preserve-view=true#get_originalsourceframeinfo' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 317, Column 5: [Suggestion: learn-site-link-broken - See documentation] Link '/microsoft-edge/webview2/reference/win32/icorewebview2dedicatedworkercreatedeventargs?view=webview2-1.0.4015-prerelease&preserve-view=true#get_worker' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 320, Column 3: [Suggestion: learn-site-link-broken - See documentation] Link '/microsoft-edge/webview2/reference/win32/icorewebview2dedicatedworkercreatedeventhandler?view=webview2-1.0.4015-prerelease&preserve-view=true' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 323, Column 3: [Suggestion: learn-site-link-broken - See documentation] Link '/microsoft-edge/webview2/reference/win32/icorewebview2dedicatedworkerdedicatedworkercreatedeventhandler?view=webview2-1.0.4015-prerelease&preserve-view=true' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 326, Column 3: [Suggestion: learn-site-link-broken - See documentation] Link '/microsoft-edge/webview2/reference/win32/icorewebview2dedicatedworkerdestroyingeventhandler?view=webview2-1.0.4015-prerelease&preserve-view=true' points to a learn site page that doesn't exist. Check the path or URL and update the link.

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