Support process singleton with IBrowserProcessHandler.OnAlreadyRunningAppRelaunch callback #4668

Is there an existing issue for this?

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

CefSharp Version

120.1.110

Operating System

Windows 11

Architecture

x64

.Net Version

.NET 4.7.2

Implementation

WinForms

Reproduction Steps

Reproducible with CefSharp.MinimalExample since 120.1.110 (cefsharp/CefSharp.MinimalExample@136a65e).
Just launch the application twice.

Expected behavior

A second launch of the application should be possible (without any restrictions).

Actual behavior

A launch of any more instances result in a crash.

This is the output of thedebug.log from the second launch:

[0109/101550.274:ERROR:crashpad_client_win.cc(546)] CreateProcess: Das System kann die angegebene Datei nicht finden. (0x2)
[0109/101550.285:INFO:crash_reporting.cc(216)] Crash reporting enabled for process: browser
[0109/101550.289:WARNING:alloy_browser_main.cc(167)] Unhandled app relaunch; implement CefBrowserProcessHandler::OnAlreadyRunningAppRelaunch.
[0109/101550.289:ERROR:crashpad_client_win.cc(143)] crash server failed to launch, self-terminating

Regression?

This was working with v120.1.80.

Known Workarounds

No known workarounds

Does this problem also occur in the CEF Sample Application

No

Other information

No response