DevToolsActivePort file doesn't exist

[mthomas-github]

Hello I'm running Python Script Using MS Edge WebDriver.

If I look in my C:\EdgeDriverTemp I do not see DevToolsActivePort either

Selenum Version: 4.11.0
Edge Version: 115.0.1901.188
Edge WebDriver: 115.0.1901.188

Selenium Python Code
edgeOption = Options()
edgeOption.use_webview = True
edgeOption.add_argument("start-maximized")
edgeOption.add_argument("--remote-debugging-port=0")
edgeOption.add_argument("--disable-extensions")
edgeOption.add_argument("--user-data-dir=C:\EdgeDriverTemp")
edgeOption.add_argument("suppress-message-center-popups")
edgeOption.binary_location = r"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
s = Service(executable_path='C:\DRIVERS\msedgedriver.exe')
browser = webdriver.Edge(service=s, options=edgeOption)

Error:
main - ERROR - Message: unknown error: DevToolsActivePort file doesn't exist
Stacktrace:
Backtrace:
GetHandleVerifier [0x00007FF6E4B65432+69586]
Microsoft::Applications::Events::EventProperty::~EventProperty [0x00007FF6E4AF5672+760242]
(No symbol) [0x00007FF6E48AB8CC]
(No symbol) [0x00007FF6E48E0FBA]
(No symbol) [0x00007FF6E48DC168]
(No symbol) [0x00007FF6E491B431]
(No symbol) [0x00007FF6E4912B83]
(No symbol) [0x00007FF6E48E4B6B]
(No symbol) [0x00007FF6E48E6024]
Microsoft::Applications::Events::ILogManager::DispatchEventBroadcast [0x00007FF6E4D3D239+1294553]
(No symbol) [0x00007FF6E49649F4]
Microsoft::Applications::Events::EventProperty::~EventProperty [0x00007FF6E4A43DF1+33073]
Microsoft::Applications::Events::EventProperty::~EventProperty [0x00007FF6E4A3C409+1865]
Microsoft::Applications::Events::ILogManager::DispatchEventBroadcast [0x00007FF6E4D3BE11+1289393]
Microsoft::Applications::Events::ILogConfiguration::operator* [0x00007FF6E4AFDC78+20184]
Microsoft::Applications::Events::ILogConfiguration::operator* [0x00007FF6E4AFA304+5476]
Microsoft::Applications::Events::ILogConfiguration::operator* [0x00007FF6E4AFA3FC+5724]
Microsoft::Applications::Events::EventProperty::~EventProperty [0x00007FF6E4AEECB1+733169]
BaseThreadInitThunk [0x00007FFD0B017614+20]
RtlUserThreadStart [0x00007FFD0C8426B1+33]

[bwalderman]

Hi @mthomas-github

Sorry for the delayed response. When you use the use_webview option, Edge WebDriver is launching your WebView2 host app directly instead of the Edge browser, so none of the command line args added with add_arguments will work as expected. To pass command line arguments to the WebView2 browser process, you need to use the webViewOptions object. Selenium EdgeOptions doesn't have a dedicated method to set this yet, so you'll need to use edgeOptions.add_experimental_option in Python.