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MicrosoftEdge

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MSEdgeExplainers
Home for explainer documents originated by the Microsoft Edge team

HTML · 1448 stars
WebView2Samples
Microsoft Edge WebView2 samples

C++ · 1042 stars
WebView2Feedback
Feedback and discussions about Microsoft Edge WebView2

PowerShell · 526 stars
Demos
Web pages and apps used to demo various DevTools, PWA, WebView, Extensions, and Web Platform features of Microsoft Edge

HTML · 330 stars

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[Problem/Bug]: WebView2 Runtime 153.0.4234.x performs a failed interactive logon (event 4625, SubStatus 0xC000006A "wrong password") as the current local user on every environment creation — can lock out Windows accounts on machines with account-lockout policies Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

MicrosoftEdge/WebView2Feedback#5722 · Opened Sep 20, 2026
Feature Request: Expose a Versioned UI State API in Microsoft Edge for AI Agent Integration Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

MicrosoftEdge/MSEdgeExplainers#1399 · 1 comment · Opened Sep 19, 2026
[Problem/Bug]: Runtime 153.0.4234.32 — renderer main thread permanently blocked in WebGPU command-buffer wait while GPU process is idle (page freezes, no hang reported to host) Open

bug regression

MicrosoftEdge/WebView2Feedback#5721 · 1 comment · 1 assignee · Opened Sep 19, 2026
Wine (macOS/Linux): runtime appends removed --use-gl=swiftshader, so GL init aborts and the WebView paints only its first frame Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

MicrosoftEdge/WebView2Feedback#5720 · 3 comments · 2 reactions · Opened Sep 18, 2026
[Problem/Bug]: 文件里面无法找到webview2但是无法下载 Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

MicrosoftEdge/WebView2Feedback#5719 · Opened Sep 17, 2026
[Problem/Bug]: Remote debugging endpoint refuses connections in non-elevated hosts on 153.0.4234.32 (regression from 152; related to #5640) Open

bug regression

MicrosoftEdge/WebView2Feedback#5718 · 2 comments · 1 assignee · Opened Sep 16, 2026
AddScriptToExecuteOnDocumentCreatedAsync takes unusually long to complete on some machines Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

MicrosoftEdge/WebView2Feedback#5716 · Opened Sep 16, 2026
[Bug]: Visual-DComp WebView stops responding while SendMouseInput continues to succeed Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

MicrosoftEdge/WebView2Feedback#5712 · 2 comments · Opened Sep 15, 2026
[Problem/Bug]: File System Access `move()` fails inside folder passed via `CreateWebFileSystemDirectoryHandle()` Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 45/100

MicrosoftEdge/WebView2Feedback#5711 · Opened Sep 14, 2026
[Problem/Bug]: Open

bug

Difficulty 5/5 Over a week Newbie friendliness 5/100

MicrosoftEdge/WebView2Feedback#5709 · Opened Sep 11, 2026
[Problem/Bug]: WebView2 Mouse Pointer Permanently Hidden After Runtime 152.0.4191.x Open

bug

Difficulty 5/5 Over a week Newbie friendliness 30/100

MicrosoftEdge/WebView2Feedback#5708 · 3 comments · Opened Sep 11, 2026
Clarification: ServiceWorker support/contract for ICoreWebView2CustomSchemeRegistration custom schemes Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

MicrosoftEdge/WebView2Feedback#5707 · 1 comment · Opened Sep 10, 2026
`AddScriptToExecuteOnDocumentCreated` completion may not be delivered during intermittent startup hangs (Evergreen 152.0.4191.66, Win32 host) Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

MicrosoftEdge/WebView2Feedback#5706 · Opened Sep 10, 2026
[Problem/Bug]: Webview2 installation via Evergreen Bootstrapper not working on multiple machines Open

bug

Difficulty 5/5 Over a week Newbie friendliness 30/100

MicrosoftEdge/WebView2Feedback#5705 · Opened Sep 10, 2026
[Problem/Bug]: Host process handles remain after repeatedly creating and closing the WebView2 environment/controller Open

Difficulty 5/5 Over a week Newbie friendliness 28/100

MicrosoftEdge/WebView2Feedback#5704 · 1 comment · Opened Sep 10, 2026
[Problem/Bug]: Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 25/100

MicrosoftEdge/WebView2Feedback#5703 · Opened Sep 9, 2026
[Problem/Bug]: Could not load file or assembly 'Microsoft.Windows.SDK.NET, Version=10.0.17763.10, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. Open

bug

Difficulty 5/5 Over a week Newbie friendliness 35/100

MicrosoftEdge/WebView2Feedback#5702 · Opened Sep 9, 2026
[Problem/Bug]: AllowHostInputProcessing breaks pointer-captured custom window resizing and can lose mouse release Open

bug

Difficulty 5/5 Over a week Newbie friendliness 28/100

MicrosoftEdge/WebView2Feedback#5701 · Opened Sep 9, 2026
[Problem/Bug]: outerHeight equals innerHeight; host window size and Y never reflected Open

bug

Difficulty 5/5 Over a week Newbie friendliness 38/100

MicrosoftEdge/WebView2Feedback#5700 · Opened Sep 9, 2026
Supported preservation-safe reuse of a 152.0.4191.66 user data folder with Fixed Runtime 152.0.4191.62 x64 Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

MicrosoftEdge/WebView2Feedback#5698 · Opened Sep 8, 2026
[Problem/Bug]: WebView2 runtime installation doesn't work any more in Windows Sandbox Open

bug regression

MicrosoftEdge/WebView2Feedback#5697 · 1 reaction · 1 assignee · Opened Sep 8, 2026
[Problem/Bug]: WebView2 v152+ enforces CSS inheritance on app-region: drag, causing unintended drag regions Open

bug regression

MicrosoftEdge/WebView2Feedback#5696 · 14 comments · 1 assignee · Opened Sep 7, 2026
[Problem/Bug]: Composition hosting — mouse and keyboard become unresponsive after repeatedly dragging outside the screen (regression: 151 OK, 152 broken) Open

regression

MicrosoftEdge/WebView2Feedback#5695 · 3 comments · 1 assignee · Opened Sep 7, 2026
[Prompt API] [Regression] Edge Dev 154 exposes LanguageModel but model execution feature gate is disabled Open

Prompt API

MicrosoftEdge/MSEdgeExplainers#1392 · 1 comment · 1 assignee · Opened Sep 4, 2026
[Problem/Bug]: New PDF engine cannot show PDFs with blankspace in basefont Open

bug regression

MicrosoftEdge/WebView2Feedback#5694 · 1 comment · 1 assignee · Opened Sep 4, 2026
GPU process of an AppContainer-hosted WebView2 (SearchHost) is denied the Direct3D shader cache; AMD driver blocks the first Present for seconds in D3DSCache's retry loop Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

MicrosoftEdge/WebView2Feedback#5693 · Opened Sep 4, 2026
[Problem/Bug]: Local PDF display black/white page 50% of the time in WebView2. Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

MicrosoftEdge/WebView2Feedback#5692 · 3 comments · Opened Sep 3, 2026
[Problem/Bug]: Save Password prompt no longer shown on runtime 152.0.4191 — autofill of existing credentials still works (regression from 151) Open

bug regression

MicrosoftEdge/WebView2Feedback#5691 · 1 comment · 1 reaction · 1 assignee · Opened Sep 3, 2026
[Problem/Bug]: Hidden WPF WebView2 reports a ~70x39 page viewport on runtime 152 (was large on 151) Open

bug regression

MicrosoftEdge/WebView2Feedback#5689 · 1 comment · 2 assignees · Opened Sep 2, 2026
[Problem/Bug] Browser process hangs for up to 10 minutes when login.live.com is blackholed Open

MicrosoftEdge/WebView2Feedback#5688 · 1 assignee · Opened Sep 2, 2026
[Contextual Logging With Console Context] <TITLE HERE> Open

Contextual Logging With Console Context

Difficulty 5/5 Over a week Newbie friendliness 10/100

MicrosoftEdge/MSEdgeExplainers#1389 · Opened Aug 29, 2026
Severe rendering slowness (several seconds) on Intel Core Ultra 200V (Lunar Lake) / Arc iGPU — fixed by --use-angle=swiftshader Open

bug

MicrosoftEdge/WebView2Feedback#5684 · 3 comments · 2 assignees · Opened Aug 28, 2026
[Problem/Bug]: Host process crashes with EXCEPTION_ACCESS_VIOLATION_WRITE while WebView2 dismisses the virtual keyboard Open

bug

MicrosoftEdge/WebView2Feedback#5683 · 2 comments · 1 assignee · Opened Aug 28, 2026
[DownloadURL] genesis edge Open

Difficulty 5/5 Over a week Newbie friendliness 10/100

MicrosoftEdge/MSEdgeExplainers#1386 · Opened Aug 27, 2026
TranslateKit component stuck at 0.0.0.0 "Update error" on 151.0.4129.107 — on-device translation unusable (repros on Windows x64 and macOS arm64) Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

MicrosoftEdge/MSEdgeExplainers#1385 · Opened Aug 27, 2026
[Problem/Bug]: Context Menu Appearing Randomly on Second Monitor. Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 45/100

MicrosoftEdge/WebView2Feedback#5679 · Opened Aug 20, 2026
[Problem/Bug]: ContextMenu Persisting Through ParentWindow Move. Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 58/100

MicrosoftEdge/WebView2Feedback#5677 · Opened Aug 20, 2026
[Problem/Bug]: WebView2CompositionControl not firing mouseleave and dragover events Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 48/100

MicrosoftEdge/WebView2Feedback#5676 · Opened Aug 19, 2026
[Problem/Bug]: IME composition window jumps to the top-left of the screen after the host window is resized Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 45/100

MicrosoftEdge/WebView2Feedback#5675 · Opened Aug 18, 2026
[Problem/Bug]: Webview stays blank/stale after being made visible following creation while hidden — until an unrelated window interaction forces a repaint Open

bug

Difficulty 5/5 Over a week Newbie friendliness 25/100

MicrosoftEdge/WebView2Feedback#5673 · Opened Aug 14, 2026
[Problem/Bug]: WebView2 UWP (EmbeddedBrowserWebView.dll) self-perpetuating 0x401/WM_USER+1 message loop -> handle leak -> renderer process explosion Open

bug

Difficulty 5/5 Over a week Newbie friendliness 35/100

MicrosoftEdge/WebView2Feedback#5672 · 1 comment · Opened Aug 14, 2026
[LinkTagModuleImport] Resolve open issues with importfrom attribute Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

MicrosoftEdge/MSEdgeExplainers#1380 · Opened Aug 14, 2026
[Problem/Bug]: ICoreWebView2CreateCoreWebView2ControllerCompletedHandler comes back with RCP_E_DISCONNECTED after a 15 hour idle period Open

bug

Difficulty 5/5 Over a week Newbie friendliness 35/100

MicrosoftEdge/WebView2Feedback#5671 · Opened Aug 13, 2026
[Problem/Bug]: The page edge://history no longer works since version 151 Open

bug regression

MicrosoftEdge/WebView2Feedback#5670 · 2 comments · 1 assignee · Opened Aug 12, 2026
[Problem/Bug]: Second CoreWebView2Controller in the same parent HWND never presents on screen (same root cause as #5574?) Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

MicrosoftEdge/WebView2Feedback#5669 · Opened Aug 8, 2026
[LinkTagModuleImport] render blocking Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

MicrosoftEdge/MSEdgeExplainers#1375 · 3 comments · Opened Aug 8, 2026
[Split Tab] Size Open

Split Tab

Difficulty 5/5 Over a week Newbie friendliness 25/100

MicrosoftEdge/MSEdgeExplainers#1374 · Opened Aug 7, 2026
[Problem/Bug]: Transparent (alpha=0) full-screen WebView2 window still hit-tests and swallows all mouse input intended for windows beneath it Open

bug

MicrosoftEdge/WebView2Feedback#5668 · 1 assignee · Opened Aug 7, 2026
[Problem/Bug]: Multiple WebView2 applications share the same Windows audio session, causing mute state to affect all apps using msedgewebview2.exe Open

bug

MicrosoftEdge/WebView2Feedback#5667 · 1 assignee · Opened Aug 6, 2026
[Problem/Bug]: WebView2 update breaks UI Automation element capture used by RPA/automation tools Open

bug regression

MicrosoftEdge/WebView2Feedback#5666 · 1 comment · 1 assignee · Opened Aug 6, 2026

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