RelNotes: Preview Runtime 154, Runtime 153

[Michael Hoffman (mikehoffms)]

Rendered articles for review:

• Preview Runtime 154.0.4255.0 (Sep. 3, 2026)

  • /webview2/release-notes/runtime/154.md
  • Internal preview: https://review.learn.microsoft.com/microsoft-edge/webview2/release-notes/runtime/154?branch=pr-en-us-3923
  • External preview:
  • Planned live: https://learn.microsoft.com/microsoft-edge/webview2/release-notes/runtime/154
  • New page.

• SDK 1.0.4255-prerelease, for Runtime 154 (Sep. 3, 2026)

  • /webview2/release-notes/sdk/1-0-4255-prerelease.md
  • Internal preview: https://review.learn.microsoft.com/microsoft-edge/webview2/release-notes/sdk/1-0-4255-prerelease?branch=pr-en-us-3923
  • External preview:
  • Planned live: https://learn.microsoft.com/microsoft-edge/webview2/release-notes/sdk/1-0-4255-prerelease
  • New page.

For later review:

• Runtime nnn.n.nnnn.nn (Mmm. dd, yyyy)

  • /webview2/release-notes/runtime/153.md
  • Internal preview: https://review.learn.microsoft.com/microsoft-edge/webview2/release-notes/runtime/153?branch=pr-en-us-3923
  • External preview:
  • Before/live: https://learn.microsoft.com/microsoft-edge/webview2/release-notes/runtime/153
  • Changed from Preview Runtime content to Stable Runtime content.

• SDK 1.0.nnnn.nn, for Runtime nnn (Mmm. dd, yyyy)

  • /webview2/release-notes/sdk/n-n-nnnn-nn.md
  • Internal preview: https://review.learn.microsoft.com/microsoft-edge/webview2/release-notes/sdk/n-n-nnnn-nn?branch=pr-en-us-3923
  • External preview:
  • Planned live: https://learn.microsoft.com/microsoft-edge/webview2/release-notes/sdk/n-n-nnnn-nn
  • New page.

---

Incidental files closely related to incoming RelNotes

• Release notes for the WebView2 Runtime

  • /webview2/release-notes/runtime/index.md
  • Internal preview: https://review.learn.microsoft.com/microsoft-edge/webview2/release-notes/runtime/index?branch=pr-en-us-3923
  • External preview:
  • Before/live: https://learn.microsoft.com/microsoft-edge/webview2/release-notes/runtime/
  • Added link: Preview Runtime nnn.n.nnnn.nn (Mmm. dd, yyyy)
  • Added link: Runtime nnn.n.nnnn.nn (Mmm. dd, yyyy)

• Release notes for WebView2 SDKs

  • /webview2/release-notes/sdk/index.md
  • Internal preview: https://review.learn.microsoft.com/microsoft-edge/webview2/release-notes/sdk/index?branch=pr-en-us-3923
  • External preview:
  • Before/live: https://learn.microsoft.com/microsoft-edge/webview2/release-notes/sdk/
  • Changelist:

• toc.yml

  • Added: Preview Runtime nnn.n.nnnn.nn (Mmm. dd, yyyy)
  • Added: Runtime nnn.n.nnnn.nn (Mmm. dd, yyyy)
  • Added new toc bucket Prerelease testing using preview channels of Microsoft Edge. Contains articles:
    • Prerelease testing using preview channels of Microsoft Edge
    • Switch to a preview channel to test upcoming APIs and features
    • Self-host by deploying preview channels

• /webview2/release-notes/includes/sdk-prerelease-template.md

  • Changelist:

• /webview2/release-notes/includes/sdk-release-template.md

  • Changelist:

---

Incidental files not closely related to incoming RelNotes

• Prerelease testing using preview channels of Microsoft Edge

  • /webview2/how-to/prerelease-testing.md
  • Internal preview: https://review.learn.microsoft.com/microsoft-edge/webview2/how-to/prerelease-testing?branch=pr-en-us-3923
  • External preview:
  • Before/live: https://learn.microsoft.com/microsoft-edge/webview2/how-to/prerelease-testing
  • Changed title from: Prerelease testing using preview channels

• Switch to a preview channel to test upcoming APIs and features

  • /webview2/how-to/set-preview-channel.md
  • Internal preview: https://review.learn.microsoft.com/microsoft-edge/webview2/how-to/set-preview-channel?branch=pr-en-us-3923
  • External preview:
  • Before/live: https://learn.microsoft.com/microsoft-edge/webview2/how-to/set-preview-channel
  • Restored old title; changed from: Test upcoming APIs and features
  • Added local toc.

• Release SDK 0.8.270, for Runtime 78 (Sep. 10, 2019)

  • /webview2/release-notes/sdk/0-8-270.md
  • Internal preview: https://review.learn.microsoft.com/microsoft-edge/webview2/release-notes/sdk/0-8-270?branch=pr-en-us-3923
  • External preview:
  • Before/live: https://learn.microsoft.com/microsoft-edge/webview2/release-notes/sdk/0-8-270
  • Changelist:

• Self-host by deploying preview channels

  • /webview2/how-to/self-hosting.md
  • Internal preview: https://review.learn.microsoft.com/microsoft-edge/webview2/how-to/self-hosting?branch=pr-en-us-3923
  • External preview:
  • Before/live: https://learn.microsoft.com/microsoft-edge/webview2/how-to/self-hosting
  • Changelist:

• Distribute your app and the WebView2 Runtime

  • /webview2/concepts/distribution.md
  • Internal preview: https://review.learn.microsoft.com/microsoft-edge/webview2/concepts/distribution?branch=pr-en-us-3923
  • External preview:
  • Before/live: https://learn.microsoft.com/microsoft-edge/webview2/concepts/distribution
  • Changelist:

• Overview of WebView2 APIs

  • /webview2/concepts/overview-features-apis.md
  • Internal preview: https://review.learn.microsoft.com/microsoft-edge/webview2/concepts/overview-features-apis?branch=pr-en-us-3923
  • External preview:
  • Before/live: https://learn.microsoft.com/microsoft-edge/webview2/concepts/overview-features-apis
  • Changelist:

• Develop secure WebView2 apps

  • /webview2/concepts/security.md
  • Internal preview: https://review.learn.microsoft.com/microsoft-edge/webview2/concepts/security?branch=pr-en-us-3923
  • External preview:
  • Before/live: https://learn.microsoft.com/microsoft-edge/webview2/concepts/security
  • Changelist:

• Prerelease and Release SDKs for WebView2

  • /webview2/concepts/versioning.md
  • Internal preview: https://review.learn.microsoft.com/microsoft-edge/webview2/concepts/versioning?branch=pr-en-us-3923
  • External preview:
  • Before/live: https://learn.microsoft.com/microsoft-edge/webview2/concepts/versioning
  • Changelist:

• Automate and test WebView2 apps with Microsoft Edge WebDriver

  • /webview2/how-to/webdriver.md
  • Internal preview: https://review.learn.microsoft.com/microsoft-edge/webview2/how-to/webdriver?branch=pr-en-us-3923
  • External preview:
  • Before/live: https://learn.microsoft.com/microsoft-edge/webview2/how-to/webdriver
  • Changelist:

• WebView2 documentation - WebView2 landing page

  • /webview2/landing/index.yml
  • Internal preview: https://review.learn.microsoft.com/microsoft-edge/webview2/landing/index?branch=pr-en-us-3923
  • External preview:
  • Before/live: https://learn.microsoft.com/microsoft-edge/webview2/landing/
  • Changelist:

AB#63903469

[learn-build-service-prod]

Learn Build status updates of commit 2d56066:

💡 Validation status: suggestions

File	Status	Preview URL	Details
microsoft-edge/webview2/release-notes/sdk/1-0-4255-prerelease.md	💡Suggestion	View	Details
microsoft-edge/webview2/release-notes/sdk/n-n-nnnn-nn.md	💡Suggestion	View	Details
microsoft-edge/toc.yml	✅Succeeded	View
microsoft-edge/webview2/concepts/developer-guide.md	✅Succeeded	View
microsoft-edge/webview2/concepts/distribution.md	✅Succeeded	View
microsoft-edge/webview2/concepts/overview-features-apis.md	✅Succeeded	View
microsoft-edge/webview2/concepts/security.md	✅Succeeded	View
microsoft-edge/webview2/concepts/versioning.md	✅Succeeded	View
microsoft-edge/webview2/how-to/prerelease-testing.md	✅Succeeded	View
microsoft-edge/webview2/how-to/self-hosting.md	✅Succeeded	View
microsoft-edge/webview2/how-to/set-preview-channel.md	✅Succeeded	View
microsoft-edge/webview2/how-to/webdriver.md	✅Succeeded	View
microsoft-edge/webview2/landing/index.yml	✅Succeeded	View
microsoft-edge/webview2/release-notes/includes/runtime-preview-template.md	✅Succeeded
microsoft-edge/webview2/release-notes/includes/sdk-prerelease-template.md	✅Succeeded
microsoft-edge/webview2/release-notes/includes/sdk-release-template.md	✅Succeeded
microsoft-edge/webview2/release-notes/runtime/153.md	✅Succeeded	View
microsoft-edge/webview2/release-notes/runtime/154.md	✅Succeeded	View
microsoft-edge/webview2/release-notes/runtime/index.md	✅Succeeded	View
microsoft-edge/webview2/release-notes/sdk/0-8-270.md	✅Succeeded	View
microsoft-edge/webview2/release-notes/sdk/index.md	✅Succeeded	View

microsoft-edge/webview2/release-notes/sdk/1-0-4255-prerelease.md

• Line 29, Column 3: [Suggestion: learn-site-link-broken - See documentation] Link '/dotnet/api/microsoft.web.webview2.core.corewebview2clusterenvironmentcreateresult?view=webview2-dotnet-1.0.4255-prerelease&preserve-view=true' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 30, Column 6: [Suggestion: learn-site-link-broken - See documentation] Link '/dotnet/api/microsoft.web.webview2.core.corewebview2clusterenvironmentcreateresult.environment?view=webview2-dotnet-1.0.4255-prerelease&preserve-view=true' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 31, Column 6: [Suggestion: learn-site-link-broken - See documentation] Link '/dotnet/api/microsoft.web.webview2.core.corewebview2clusterenvironmentcreateresult.status?view=webview2-dotnet-1.0.4255-prerelease&preserve-view=true' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 33, Column 3: [Suggestion: learn-site-link-broken - See documentation] Link '/dotnet/api/microsoft.web.webview2.core.corewebview2clusterenvironmentoptions?view=webview2-dotnet-1.0.4255-prerelease&preserve-view=true' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 34, Column 6: [Suggestion: learn-site-link-broken - See documentation] Link '/dotnet/api/microsoft.web.webview2.core.corewebview2clusterenvironmentoptions.?view=webview2-dotnet-1.0.4255-prerelease&preserve-view=true' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 35, Column 6: [Suggestion: learn-site-link-broken - See documentation] Link '/dotnet/api/microsoft.web.webview2.core.corewebview2clusterenvironmentoptions.additionalbrowserarguments?view=webview2-dotnet-1.0.4255-prerelease&preserve-view=true' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 36, Column 6: [Suggestion: learn-site-link-broken - See documentation] Link '/dotnet/api/microsoft.web.webview2.core.corewebview2clusterenvironmentoptions.allowsinglesignonusingosprimaryaccount?view=webview2-dotnet-1.0.4255-prerelease&preserve-view=true' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 37, Column 6: [Suggestion: learn-site-link-broken - See documentation] Link '/dotnet/api/microsoft.web.webview2.core.corewebview2clusterenvironmentoptions.arebrowserextensionsenabled?view=webview2-dotnet-1.0.4255-prerelease&preserve-view=true' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 38, Column 6: [Suggestion: learn-site-link-broken - See documentation] Link '/dotnet/api/microsoft.web.webview2.core.corewebview2clusterenvironmentoptions.channelsearchkind?view=webview2-dotnet-1.0.4255-prerelease&preserve-view=true' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 39, Column 6: [Suggestion: learn-site-link-broken - See documentation] Link '/dotnet/api/microsoft.web.webview2.core.corewebview2clusterenvironmentoptions.clustername?view=webview2-dotnet-1.0.4255-prerelease&preserve-view=true' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 40, Column 6: [Suggestion: learn-site-link-broken - See documentation] Link '/dotnet/api/microsoft.web.webview2.core.corewebview2clusterenvironmentoptions.customschemeregistrations?view=webview2-dotnet-1.0.4255-prerelease&preserve-view=true' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 41, Column 6: [Suggestion: learn-site-link-broken - See documentation] Link '/dotnet/api/microsoft.web.webview2.core.corewebview2clusterenvironmentoptions.enabletrackingprevention?view=webview2-dotnet-1.0.4255-prerelease&preserve-view=true' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 42, Column 6: [Suggestion: learn-site-link-broken - See documentation] Link '/dotnet/api/microsoft.web.webview2.core.corewebview2clusterenvironmentoptions.language?view=webview2-dotnet-1.0.4255-prerelease&preserve-view=true' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 43, Column 6: [Suggestion: learn-site-link-broken - See documentation] Link '/dotnet/api/microsoft.web.webview2.core.corewebview2clusterenvironmentoptions.perhostprofileisolation?view=webview2-dotnet-1.0.4255-prerelease&preserve-view=true' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 44, Column 6: [Suggestion: learn-site-link-broken - See documentation] Link '/dotnet/api/microsoft.web.webview2.core.corewebview2clusterenvironmentoptions.releasechannels?view=webview2-dotnet-1.0.4255-prerelease&preserve-view=true' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 46, Column 3: [Suggestion: learn-site-link-broken - See documentation] Link '/dotnet/api/microsoft.web.webview2.core.corewebview2clusterenvironmentstatus?view=webview2-dotnet-1.0.4255-prerelease&preserve-view=true' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 47, Column 6: [Suggestion: learn-site-link-broken - See documentation] Link '/dotnet/api/microsoft.web.webview2.core.corewebview2clusterenvironmentstatus?view=webview2-dotnet-1.0.4255-prerelease&preserve-view=true' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 48, Column 6: [Suggestion: learn-site-link-broken - See documentation] Link '/dotnet/api/microsoft.web.webview2.core.corewebview2clusterenvironmentstatus?view=webview2-dotnet-1.0.4255-prerelease&preserve-view=true' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 49, Column 6: [Suggestion: learn-site-link-broken - See documentation] Link '/dotnet/api/microsoft.web.webview2.core.corewebview2clusterenvironmentstatus?view=webview2-dotnet-1.0.4255-prerelease&preserve-view=true' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 52, Column 6: [Suggestion: learn-site-link-broken - See documentation] Link '/dotnet/api/microsoft.web.webview2.core.corewebview2environment.createorjoinclusterenvironmentasync?view=webview2-dotnet-1.0.4255-prerelease&preserve-view=true' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 53, Column 6: [Suggestion: learn-site-link-broken - See documentation] Link '/dotnet/api/microsoft.web.webview2.core.corewebview2environment.getclusterenvironmentoptions?view=webview2-dotnet-1.0.4255-prerelease&preserve-view=true' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 56, Column 6: [Suggestion: learn-site-link-broken - See documentation] Link '/dotnet/api/microsoft.web.webview2.core.corewebview2frame.launchingexternalurischeme?view=webview2-dotnet-1.0.4255-prerelease&preserve-view=true' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 59, Column 6: [Suggestion: learn-site-link-broken - See documentation] Link '/dotnet/api/microsoft.web.webview2.core.corewebview2launchingexternalurischemeeventargs.handled?view=webview2-dotnet-1.0.4255-prerelease&preserve-view=true' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 63, Column 3: [Suggestion: learn-site-link-broken - See documentation] Link '/microsoft-edge/webview2/reference/winrt/microsoft_web_webview2_core/corewebview2clusterenvironmentcreateresult?view=webview2-winrt-1.0.4255-prerelease&preserve-view=true' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 64, Column 6: [Suggestion: learn-site-link-broken - See documentation] Link '/microsoft-edge/webview2/reference/winrt/microsoft_web_webview2_core/corewebview2clusterenvironmentcreateresult?view=webview2-winrt-1.0.4255-prerelease&preserve-view=true#environment' points to a learn site page that doesn't exist. Check the path or URL and update the link.

This comment lists only the first 25 errors (including error/warning/suggestion) in the pull request.
For more details, please refer to the build report.

Note: Your PR may contain errors or warnings or suggestions unrelated to the files you changed. This happens when external dependencies like GitHub alias, Microsoft alias, cross repo links are updated. Please use these instructions to resolve them.