An error occurs in the rpc module.

[songminkyu]

Is there an existing issue for this?

• I have searched both open/closed issues, no issue already exists.

CefSharp Version

126.2.180

Operating System

Windows 10

Architecture

x64

.Net Version

net 8.0

Implementation

WPF

Reproduction Steps

hello

If you enable native debugging in C# and run it after building, the following error occurs.

Unhandled exception in FINALForensics.exe at 0x00007FFCB8B230C4 (rpcrt4.dll). 0xC0020043: rpc encountered an internal error (parameters: 0x0000000000000001, 0x00000000000006A6).

However, the problem does not occur in CefSharp.Wpf.NETCore version 124.3.80, so what is the difference?

The development environment is net 8.0 and WPF, and the Cefsharp version is 126.2.180.

Cef.Initialize(settings);

It says that an rpc exception occurs after the call.

Expected behavior

124.3.80 worked without problem.
126.2.180 A problem occurred after upgrading.

namespace FD.CefServices
{
public class CefService
{
public CefService() { }

      /// <summary>
      /// Please customize CefSettings.root_cache_path for your application. Use of the default value may lead to unintended process singleton behavior.
      /// </summary>
      public void Cef_InitializeRootCachePath()
      {            
          var settings = new CefSettings();            
       
          string createdatetime = DateTime.Now.ToString("yyyyMMdd_HHmmss");
          string RootCefCachePath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Temporary Data", "CefCache", createdatetime);
          if (!Directory.Exists(RootCefCachePath))
          {
              Directory.CreateDirectory(RootCefCachePath);
          }

          settings.RootCachePath = RootCefCachePath;
    
          Cef.Initialize(settings);
         
      }
      public void Cef_Shutdown()
      {
          Cef.Shutdown();
      }
  }

}

Actual behavior

Unhandled exception in FINALForensics.exe at 0x00007FFCB8B230C4 (rpcrt4.dll). 0xC0020043: rpc encountered an internal error (parameters: 0x0000000000000001, 0x00000000000006A6).

Regression?

No response

Known Workarounds

No response

Does this problem also occur in the CEF Sample Application

Yes using WPF/OffScreen command line args

Other information

No response

[amaitland]

Converted to discussion as this is unlikely a bug in CefSharp.

Did you test with the MinimalExample and confirm the issue reproduces there?

https://github.com/cefsharp/CefSharp.MinimalExample

However, the problem does not occur in CefSharp.Wpf.NETCore version 124.3.80, so what is the difference?

#4835

Or it's simply just a upstream change in how Chromium behaves.

Unhandled exception in FINALForensics.exe at 0x00007FFCB8B230C4 (rpcrt4.dll). 0xC0020043: rpc encountered an internal error (parameters: 0x0000000000000001, 0x00000000000006A6).

rpcrt4.dll is used by Chromium, not used directly by CefSharp, so we have no direct control over the behaviour.

You'll need to load the libcef.dll.pdb and get a meaningful stack trace.

https://github.com/cefsharp/CefSharp/wiki/Trouble-Shooting#unmanaged-crashes-when-the-process-dies