This often happens if the parent application crashes but leaves the subprocess running. Open Task Manager , right-click cefsharp.browsersubprocess.exe , and select End Task .
If you are seeing errors that the file is missing, the safest solution is to reinstall the specific application causing the error (e.g., Razer Cortex or AOL Desktop Gold). download cefsharp.browsersubprocess.exe
Right-click the file in Task Manager, select Properties , and look for a verified signer. If it is unsigned and in a suspicious folder like Temp , it may be a virus. This often happens if the parent application crashes
If you receive an error about a missing CefSharp.BrowserSubprocess.dll , ensure your system has the correct Visual C++ Redistributable installed, as this is a common prerequisite for the library to run. Summary Table Right-click the file in Task Manager, select Properties
Because it is an executable, malware sometimes disguises itself using this name.