CefSharp.BrowserSubProcess.exe - System Error windows popped up when system was idle for 14 hours with Cef Browser running

[alokpandas2195]

Is there an existing issue for this?

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

CefSharp Version

119.1.20

Operating System

Windows 10

Architecture

x64

.Net Version

4.8

Implementation

WPF

Reproduction Steps

The system was idle for last 14 hours when below traces were logged

System Event Log : "I 27-Oct-26 05:25:09 26 Application P... CriticalAppShutdownCleanupTimeout"

Application Event Log : "Application: CefSharp.BrowserSubprocess.exe Framework Version: v4.0.30319 Description: The process was terminated due to an unhandled exception. Exception Info: exception code e0000008, exception address"

And the Popup mentioned in the Title was displayed which needs it to be clicked to run my Hosting Application.

The System was running idle with CefBrowser was running with Application which uses GPU and Rendered Memory is restricted 300 MB CPU restricted with 0.5 Core.

Also whenever Rendered Process is termintaed my application gets notified and logs it, and there were no logs found for renderer process termination.

Expected behavior

While System stays idle the Cef should not cause my Application with any windows pop up

Actual behavior

CefSharp.BrowserSubProcess.exe - System Error windows popped up.
This restricted user to use the application.

There is possibility that user may not have Mouse or Keyboard access and this would not be easy to remove the popup for user.

Regression?

No response

Known Workarounds

Click on Ok then the pop up closes, but for my all application this workaround may not be feasible

Does this problem also occur in the CEF Sample Application

Not Tested

Other information

No response