MicrosoftEdge / MicrosoftEdge/WebView2Feedback
[Problem/Bug]: When msedgewebview2 is already running (in task manager) and I try to run my webview2 project, an exception is thrown
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Description
What happened?
When I build my .NET project using VS 2022 - the build launches msedgewebview2.exe processes and then does not shut down those processes.
Then when I run my application that uses webview2, I get an exception and I cannot launch my webview2 dialog. To get it to work, I need to open task manager and shut down the msedgewebview2 processes.
This happens in multiple projects. Is there something I need to do prior to EnsureCoreWebView2Async so this does not happen?
Exception on this call:
await webView.EnsureCoreWebView2Async(null);
Exception:
System.Runtime.InteropServices.COMException
HResult=0x8007139F
Message=The group or resource is not in the correct state to perform the requested operation. (Exception from HRESULT: 0x8007139F)
Source=mscorlib
StackTrace:
at System.Runtime.InteropServices.Marshal.ThrowExceptionForHRInternal(Int32 errorCode, IntPtr errorInfo)
at Microsoft.Web.WebView2.Core.CoreWebView2Environment.d__80.MoveNext()
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)
at Microsoft.Web.WebView2.WinForms.WebView2.d__24.MoveNext()
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
at SmartViewWebTrace.Form1.d__2.MoveNext() in D:\Projects\Intern\SmartViewWebTrace\SmartViewWebTrace\SmartViewWebTrace\Form1.cs:line 34
Importance
Blocking. My app's basic functions are not working due to this issue.
Runtime Channel
Stable release (WebView2 Runtime)
Runtime Version
119.0.2151.58
SDK Version
1.0.1518.46
Framework
Winforms
Operating System
Windows 11
OS Version
10.0.22621 build 22621
Repro steps
Starting with msedgewebview2.exe in taskmanager - in my case, if I build my .net project, these processes appear and do not go away.
Run app with Windows.Form that has webview2 control. Initialize webview2 with EnsureCoreWebView2Async and get exception.
Regression
No, this never worked
Last working version (if regression)
No response
Contributor guide
No contributing guide indexed for this repository
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reproducing the WinForms application with msedgewebview2.exe already running, then inspect the EnsureCoreWebView2Async call and stack trace at Form1.cs line 34. Compare behavior with the listed WebView2 Runtime 119.0.2151.58 and SDK 1.0.1518.46. Done means identifying a reproducible cause and documenting or implementing a verified resolution for initialization.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- csharp
- Domain
- desktop
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 28/100