main to live Aug. 31, 2026

microsoft-edge/toc.yml

@@ -1529,7 +1529,10 @@
                 - name: Release notes for the WebView2 Runtime
                   href: ./webview2/release-notes/runtime/index.md
 
-                - name: Preview Runtime 152.0.4181.0 (Aug. 3, 2026)
+                - name: Preview Runtime 153.0.4234.6 (Aug. 28, 2026)
+                  href: ./webview2/release-notes/runtime/153.md
+
+                - name: Runtime 152.0.4191.53 (Aug. 28, 2026)
                   href: ./webview2/release-notes/runtime/152.md
 
                 - name: Runtime 151.0.4129.50 (Aug. 3, 2026)
@@ -1556,11 +1559,11 @@
                 - name: Runtime 144.0.3719.77 (Jan. 27, 2026)
                   href: ./webview2/release-notes/runtime/144.md
 
-                - name: Runtime 143.0.3650.58 (Dec. 8, 2025)
-                  href: ./webview2/release-notes/runtime/143.md
-
                 - name: Archive
                   items:
+                    - name: Runtime 143.0.3650.58 (Dec. 8, 2025)
+                      href: ./webview2/release-notes/runtime/143.md
+
                     - name: Runtime 142.0.3595.46 (Nov. 3, 2025)
                       href: ./webview2/release-notes/runtime/142.md
 
@@ -1768,6 +1771,9 @@
                 - name: Release notes for WebView2 SDKs
                   href: ./webview2/release-notes/sdk/index.md
 
+                - name: SDK 1.0.4191.47, for Runtime 152 (Aug. 28, 2026)
+                  href: ./webview2/release-notes/sdk/1-0-4191-47.md
+
                 - name: SDK 1.0.4181-prerelease, for Runtime 152 (Aug. 3, 2026)
                   href: ./webview2/release-notes/sdk/1-0-4181-prerelease.md
 

microsoft-edge/web-platform/release-notes/152.md

@@ -48,7 +48,7 @@ See [What's new in DevTools (Microsoft Edge 152)](../../devtools/whats-new/152.m
 ## WebView2
 
 See:
-* [Preview Runtime 152.0.4181.0 (Aug. 3, 2026)](../../webview2/release-notes/runtime/152.md)
+* [Runtime 152.0.4191.53 (Aug. 28, 2026)](../../webview2/release-notes/runtime/152.md)
 * [SDK 1.0.4181-prerelease, for Runtime 152 (Aug. 3, 2026)](../../webview2/release-notes/sdk/1-0-4181-prerelease.md)
 
 

microsoft-edge/webview2/concepts/webview-features-flags.md

@@ -6,7 +6,7 @@ ms.author: msedgedevrel
 ms.topic: article
 ms.service: microsoft-edge
 ms.subservice: webview
-ms.date: 06/24/2026
+ms.date: 08/28/2026
 ---
 # WebView2 browser flags
 <!-- lexicon:
@@ -111,6 +111,7 @@ If the flag takes a value other than true|false, give an example. -->
 | `edge-webview-unique-window-class` | Makes WebView2 register module-specific window classes by automatically appending a suffix that's derived from the client module's file name, without path or extension details.  For example, for the file name `EmbeddedBrowserWebView.dll`, a suffix of `EmbeddedBrowserWebView` is appended to `Chrome_WidgetWin_0`, forming `Chrome_WidgetWin_0_EmbeddedBrowserWebView`.  Enable this flag, to avoid a crash that can occur when different versions of WebView2 and Chromium Embedded Framework (CEF) coexist in the same process and attempt to interact with windows that share the same class. |
 | `embedded-browser-webview-dpi-awareness` | Sets the DPI awareness level of the server-side processes. |
 | `enable-aggressive-domstorage-flushing` | Enables aggressive flushing of DOM Storage, to minimize data loss. |
+| `enable-blink-features` | `enable-blink-features=DragAndDropJSFileObjects` enables dragging JavaScript-constructed `File` objects from the WebView2 control to native Windows applications and to other applications that are based on the Chromium browser engine.  Currently limited to image MIME types.  Without this flag, the file bytes are discarded and only the file name is delivered as plain text.  Files that are delivered through this path don't receive a `Mark` of the Web marking. |
 | `enable-experimental-web-platform-features` | Enables Web Platform features that are in development. |
 | `enable-logging` | Enable logging at the error level. |
 | `force-color-profile` | Force all monitors to be treated as though they have the specified color profile.  Valid values: `srgb`, `generic-rgb`. |

microsoft-edge/webview2/release-notes/includes/runtime-preview-template.md

@@ -9,7 +9,7 @@ ms.subservice: webview
 ms.date: 01/01/2026
 ---
 # Preview Runtime nnn.n.nnnn.nn (Mmm. dd, yyyy)
-<!-- todo: when this runtime gets released as a stable runtime, remove "preview" from title, update version number, update date, update lead-in sentence; same format as regular sibling .md -->
+<!-- todo: when this runtime gets released as a stable runtime, remove "preview" from title, update version number, update date, update lead-in sentence; per /release-notes/includes/runtime-template.md -->
 
 Release notes for Microsoft Edge WebView2 Preview Runtime, release date: Mmm. dd, yyyy.
 

microsoft-edge/webview2/release-notes/runtime/150.md

@@ -16,7 +16,7 @@ Release notes for Microsoft Edge WebView2 Runtime, release date: Jul. 7, 2026.
 <!-- ====================================================================== -->
 ## WebView2 Runtime is changing to a 2-week release cadence
 
-Starting with version 152 (Aug. 24, 2026), the WebView2 Runtime moves to a 2-week release cadence.  This is aligned with Microsoft Edge.  WebView2 Runtime version 151 is the final release that's on a 4-week release cadence.
+Starting with version 152 (Aug. 28, 2026), the WebView2 Runtime moves to a 2-week release cadence.  This is aligned with Microsoft Edge.  WebView2 Runtime version 151 is the final release that's on a 4-week release cadence.
 
 See [[Announcement] WebView2 Runtime moves to a 2-week release cadence (starting v152)](https://github.com/MicrosoftEdge/WebView2Announcements/issues/137).
 

microsoft-edge/webview2/release-notes/runtime/151.md

@@ -16,7 +16,7 @@ Release notes for Microsoft Edge WebView2 Runtime, release date: Aug. 3, 2026.
 <!-- ====================================================================== -->
 ## WebView2 Runtime is changing to a 2-week release cadence
 
-Starting with version 152 (Aug. 24, 2026), the WebView2 Runtime moves to a 2-week release cadence.  This is aligned with Microsoft Edge.  WebView2 Runtime version 151 is the final release that's on a 4-week release cadence.
+Starting with version 152 (Aug. 28, 2026), the WebView2 Runtime moves to a 2-week release cadence.  This is aligned with Microsoft Edge.  WebView2 Runtime version 151 is the final release that's on a 4-week release cadence.
 
 See [[Announcement] WebView2 Runtime moves to a 2-week release cadence (starting v152)](https://github.com/MicrosoftEdge/WebView2Announcements/issues/137).
 

microsoft-edge/webview2/release-notes/runtime/152.md

@@ -1,25 +1,23 @@
 ---
-title: Preview Runtime 152.0.4181.0 (Aug. 3, 2026)
-description: Release notes for Microsoft Edge WebView2 Preview Runtime 152.0.4181.0.
+title: Runtime 152.0.4191.53 (Aug. 28, 2026)
+description: Release notes for Microsoft Edge WebView2 Preview Runtime.
 author: MSEdgeTeam
 ms.author: msedgedevrel
 ms.topic: article
 ms.service: microsoft-edge
 ms.subservice: webview
-ms.date: 08/03/2026
+ms.date: 08/28/2026
 ---
-# Preview Runtime 152.0.4181.0 (Aug. 3, 2026)
-<!-- todo: when this runtime gets released as a stable runtime, remove "preview" from title, update version number, update date, update lead-in sentence; same format as regular sibling .md -->
+# Runtime 152.0.4191.53 (Aug. 28, 2026)
 
-Release notes for Microsoft Edge WebView2 Preview Runtime, release date: Aug. 3, 2026.
-
-<!-- todo: remove paragraph when this runtime gets released as a stable runtime -->
-This is a Preview Runtime, for early testing.  Prerelease testing of WebView2 SDKs uses a preview channel of Microsoft Edge (Beta, Dev, or Canary), which includes the WebView2 Preview Runtime.  See [Prerelease testing using preview channels](../../how-to/prerelease-testing.md).
+Release notes for Microsoft Edge WebView2 Runtime, release date: Aug. 28, 2026.
 
 
 <!-- ====================================================================== -->
 #### Bug fixes
 
+<!-- from initial, preview phase: -->
+
 * Fixed invisible caption button glyphs on dark Window Controls Overlay backgrounds.
 
 * Restricted access to a singleton host pipe in legacy WebView2 clients.
@@ -36,10 +34,17 @@ This is a Preview Runtime, for early testing.  Prerelease testing of WebView2 SD
 
 * Fixed the inability to drag a window via the top border of a custom title bar.
 
+<!-- additions from later, stable phase: -->
+
+* Fixed an issue that could cause WebView2 apps to crash during startup.
+
+* Fixed a cross-origin redirect failure when `WebResourceRequested` (WRR) was attached.
+
 
 <!-- ====================================================================== -->
 ## See also
 
+* [SDK 1.0.4191.47, for Runtime 152 (Aug. 28, 2026)](../sdk/1-0-4191-47.md)
 * [SDK 1.0.4181-prerelease, for Runtime 152 (Aug. 3, 2026)](../sdk/1-0-4181-prerelease.md)
 * [Release notes for WebView2](../index.md)
    * [Release notes for the WebView2 Runtime](./index.md)

microsoft-edge/webview2/release-notes/runtime/153.md

@@ -0,0 +1,41 @@
+---
+title: Preview Runtime 153.0.4234.6 (Aug. 28, 2026)
+description: Release notes for Microsoft Edge WebView2 Preview Runtime 153.0.4234.6.
+author: MSEdgeTeam
+ms.author: msedgedevrel
+ms.topic: article
+ms.service: microsoft-edge
+ms.subservice: webview
+ms.date: 08/28/2026
+---
+# Preview Runtime 153.0.4234.6 (Aug. 28, 2026)
+<!-- todo: when this runtime gets released as a stable runtime, remove "preview" from title, update version number, update date, update lead-in sentence; per /release-notes/includes/runtime-template.md -->
+
+Release notes for Microsoft Edge WebView2 Preview Runtime, release date: Aug. 28, 2026.
+
+<!-- todo: remove paragraph when this runtime gets released as a stable runtime -->
+This is a Preview Runtime, for early testing.  Prerelease testing of WebView2 SDKs uses a preview channel of Microsoft Edge (Beta, Dev, or Canary), which includes the WebView2 Preview Runtime.  See [Prerelease testing using preview channels](../../how-to/prerelease-testing.md).
+
+
+<!-- ====================================================================== -->
+#### Bug fixes
+
+* Fixed an issue that could cause WebView2 applications to crash during startup.
+
+* Fixed a UAF in `ClosePrintToStreamHandle`.
+
+* Fixed a cross-origin redirect failure when `WebResourceRequested` (WRR) was attached.
+
+* Fixed downloads so they're submitted for antivirus scanning under the host app's identity instead of the shared Runtime's identity.
+
+* Fixed Mark-of-the-Web prompt state so it's tracked per the host app instead of per the shared WebView2 Runtime.
+
+* Passkey prompts now open in the correct WebView2 host window.
+
+
+<!-- ====================================================================== -->
+## See also
+
+* [Release notes for WebView2](../index.md)
+   * [Release notes for the WebView2 Runtime](./index.md)
+   * [Release notes for WebView2 SDKs](../sdk/index.md)

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

@@ -6,7 +6,7 @@ ms.author: msedgedevrel
 ms.topic: article
 ms.service: microsoft-edge
 ms.subservice: webview
-ms.date: 08/12/2026
+ms.date: 08/24/2026
 ---
 # Release notes for the WebView2 Runtime
 
@@ -15,7 +15,8 @@ list past 10 releases (runtimes)
 in toc.yml, add new relnotes pages, move relnotes pages to archive
 in /webview2/release-notes/runtime/index.md, add new relnotes link, remove earliest relnotes link -->
 Release notes for recent Runtimes:
-* [Preview Runtime 152.0.4181.0 (Aug. 3, 2026)](./152.md)
+* [Preview Runtime 153.0.4234.6 (Aug. 28, 2026)](./153.md)
+* [Runtime 152.0.4191.53 (Aug. 28, 2026)](./152.md)
 * [Runtime 151.0.4129.50 (Aug. 3, 2026)](./151.md)
 * [Runtime 150.0.4078.44 (Jul. 7, 2026)](./150.md)
 * [Runtime 149.0.4022.49 (Jun. 11, 2026)](./149.md)
@@ -24,7 +25,6 @@ Release notes for recent Runtimes:
 * [Runtime 146.0.3856.49 (Mar. 16, 2026)](./146.md)
 * [Runtime 145.0.3800.47 (Feb. 16, 2026)](./145.md)
 * [Runtime 144.0.3719.77 (Jan. 27, 2026)](./144.md)
-* [Runtime 143.0.3650.58 (Dec. 8, 2025)](./143.md)
 
 For earlier release notes, see **Archive** in the table of contents.
 
@@ -51,7 +51,7 @@ Make sure to re-compile your WebView2 app after updating the WebView2 SDK NuGet
 
 * Use the Canary preview channel of Microsoft Edge (which includes the WebView2 Preview Runtime) when you do early testing and development using a Prerelease version of the WebView2 SDK package.
 
-  Canary is the recommended preview channel, because it ships at the fastest cadence and has the newest APIs.  
+  Canary is the recommended preview channel, because it ships at the fastest cadence and has the newest APIs.
 
   Prerelease testing of WebView2 SDKs uses a preview channel of Microsoft Edge (Beta, Dev, or Canary), which includes the WebView2 Preview Runtime.  See [Prerelease testing using preview channels](../../how-to/prerelease-testing.md).
 

microsoft-edge/webview2/release-notes/sdk/1-0-4181-prerelease.md

@@ -14,7 +14,7 @@ Release notes for Microsoft Edge WebView2 Prerelease SDK, release date: Aug. 3,
 
 [NuGet package for WebView2 SDK 1.0.4181-prerelease](https://www.nuget.org/packages/Microsoft.Web.WebView2/1.0.4181-prerelease)
 
-For full API compatibility, this Prerelease version of the WebView2 SDK requires the WebView2 Runtime that ships with Microsoft Edge version 152.0.4181.0 or later; see [Preview Runtime 152.0.4181.0 (Aug. 3, 2026)](../runtime/152.md).
+For full API compatibility, this Prerelease version of the WebView2 SDK requires the WebView2 Runtime that ships with Microsoft Edge version 152.0.4181.0 or later; see [Runtime 152.0.4191.53 (Aug. 28, 2026)](../runtime/152.md).
 
 
 <!-- ====================================================================== -->
@@ -130,7 +130,7 @@ Releasing or closing the monitor stops all events and clears all filters.
 <!-- ====================================================================== -->
 ## See also
 
-* [Preview Runtime 152.0.4181.0 (Aug. 3, 2026)](../runtime/152.md)
+* [Runtime 152.0.4191.53 (Aug. 28, 2026)](../runtime/152.md)
 * [Release notes for WebView2](../index.md)
    * [Release notes for the WebView2 Runtime](../runtime/index.md)
    * [Release notes for WebView2 SDKs](./index.md)

microsoft-edge/webview2/release-notes/sdk/1-0-4191-47.md

@@ -0,0 +1,34 @@
+---
+title: SDK 1.0.4191.47, for Runtime 152 (Aug. 28, 2026)
+description: Release notes for Microsoft Edge WebView2, for Release SDK 1.0.4191.47.
+author: MSEdgeTeam
+ms.author: msedgedevrel
+ms.topic: article
+ms.service: microsoft-edge
+ms.subservice: webview
+ms.date: 08/28/2026
+---
+# SDK 1.0.4191.47, for Runtime 152 (Aug. 28, 2026)
+
+<!-- per NuGet -->
+
+Release notes for Microsoft Edge WebView2 SDK, release date: Aug. 28, 2026.
+
+[NuGet package for WebView2 SDK 1.0.4191.47](https://www.nuget.org/packages/Microsoft.Web.WebView2/1.0.4191.47)
+
+For full API compatibility, this Release version of the WebView2 SDK requires WebView2 [Runtime 152.0.4191.53 (Aug. 28, 2026)](../runtime/152.md) or later.
+
+
+<!-- ====================================================================== -->
+## Bug fixes
+
+* Fixed a WPF crash from changing the display topology in composition-controlled apps.
+
+
+<!-- ====================================================================== -->
+## See also
+
+* [Runtime 152.0.4191.53 (Aug. 28, 2026)](../runtime/152.md)
+* [Release notes for WebView2](../index.md)
+   * [Release notes for the WebView2 Runtime](../runtime/index.md)
+   * [Release notes for WebView2 SDKs](./index.md)

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

@@ -15,6 +15,7 @@ list past 10 releases
 in toc.yml, add new relnotes pages, move relnotes pages to archive
 in /webview2/release-notes/sdk/index.md, add new relnotes links, remove earliest relnotes links -->
 Release notes for recent SDKs:
+* [SDK 1.0.4191.47, for Runtime 152 (Aug. 28, 2026)](./1-0-4191-47.md)
 * [SDK 1.0.4181-prerelease, for Runtime 152 (Aug. 3, 2026)](./1-0-4181-prerelease.md)
 * [SDK 1.0.4129.50, for Runtime 151 (Aug. 3, 2026)](./1-0-4129-50.md)
 * [SDK 1.0.4126-prerelease, for Runtime 151 (Jul. 7, 2026)](./1-0-4126-prerelease.md)