[🐛 Bug]: OpenQA.Selenium.WebDriverException: 'Cannot start the driver service on http://localhost:50909/'

[linuxaged]

What happened?

Just follow the Use WebDriver to automate Microsoft Edge, but the driver service can not start, have tried ChromeDirver, EdgeDriver, FirefoxDriver, all failed with same error.

msedgedriver --version 131.0.2903.112 (16ab910a6e75f1c7d2da060bbe9ac569dfe64f70)
geckodriver --version 0.35.0 (9f0a0036bea4 2024-08-03 07:11 +0000)
chromedriver --version ChromeDriver 131.0.6778.205 (81b36b9535e3e3b610a52df3da48cd81362ec860-refs/branch-heads/6778_155@{#8})

dirver path has been added to user's PATH

> echo %PATH%
D:\app\geckodriver;D:\app\chromedriver-win64;D:\app\edgedriver_win64;

How can we reproduce the issue?

dotnet new console --framework net9.0
dotnet add package Selenium.WebDriver
dotnet add package Selenium.WebDriver.GeckoDriver

//Program.cs
using OpenQA.Selenium.Firefox;
using OpenQA.Selenium;
class Program
{
    static void Main(string[] args)
    {
        var driver = new FirefoxDriver();
        try
        {
            driver.Url = "https://bing.com";

            var element = driver.FindElement(By.Id("sb_form_q"));
            element.SendKeys("WebDriver");
            element.Submit();

            Thread.Sleep(5000);
        }
        finally
        {
            driver.Quit();
        }
    }
}

### Relevant log output

```shell
'SeleniumCSharpProject.exe' (CoreCLR: DefaultDomain): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\System.Private.CoreLib.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'D:\workspace\SeleniumCSharpProject\bin\Debug\net9.0-windows10.0.26100.0\SeleniumCSharpProject.dll'. Symbols loaded.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\System.Runtime.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'd:\program files\microsoft visual studio\2022\enterprise\common7\ide\commonextensions\microsoft\hotreload\Microsoft.Extensions.DotNetDeltaApplier.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\System.IO.Pipes.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\System.Linq.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\System.Collections.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\System.Console.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\System.Threading.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\System.Runtime.InteropServices.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\System.Threading.Overlapped.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\System.Security.AccessControl.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\System.Security.Principal.Windows.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\System.Security.Claims.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\System.Runtime.Loader.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\System.Collections.Concurrent.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'D:\workspace\SeleniumCSharpProject\bin\Debug\net9.0-windows10.0.26100.0\WebDriver.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\System.Drawing.Primitives.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\System.Threading.Thread.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\System.Net.Sockets.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\System.Net.Primitives.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\Microsoft.Win32.Primitives.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\System.Diagnostics.Tracing.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\System.Runtime.Intrinsics.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\System.Memory.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\System.Diagnostics.Process.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\System.ComponentModel.Primitives.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\System.Text.Json.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\System.Threading.ThreadPool.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\System.Text.Encodings.Web.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\System.Text.Encoding.Extensions.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\System.Numerics.Vectors.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\System.Private.Uri.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\System.Net.Http.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\System.Diagnostics.DiagnosticSource.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\System.Net.Security.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\System.Security.Cryptography.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'D:\Program Files\Microsoft Visual Studio\2022\Enterprise\Common7\IDE\PrivateAssemblies\Runtime\Microsoft.VisualStudio.Debugger.Runtime.NetCoreApp.dll'. 
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\netstandard.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'D:\Program Files\Microsoft Visual Studio\2022\Enterprise\Common7\IDE\CommonExtensions\Microsoft\IntelliTrace\Microsoft.IntelliTrace.TelemetryObserver.Common.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'D:\Program Files\Microsoft Visual Studio\2022\Enterprise\Common7\IDE\CommonExtensions\Microsoft\IntelliTrace\Microsoft.IntelliTrace.TelemetryObserver.CoreClr.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\System.Reflection.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\System.Reflection.Extensions.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\System.Runtime.Extensions.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\System.Net.NameResolution.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\System.Net.Quic.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\System.Net.NetworkInformation.dll'. Symbol loading disabled by Include/Exclude setting.
'SeleniumCSharpProject.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\System.Collections.NonGeneric.dll'. Symbol loading disabled by Include/Exclude setting.
Exception thrown: 'OpenQA.Selenium.WebDriverException' in WebDriver.dll
Exception thrown: 'OpenQA.Selenium.WebDriverException' in System.Private.CoreLib.dll
Exception thrown: 'OpenQA.Selenium.WebDriverException' in System.Private.CoreLib.dll
Exception thrown: 'OpenQA.Selenium.WebDriverException' in WebDriver.dll
An unhandled exception of type 'OpenQA.Selenium.WebDriverException' occurred in WebDriver.dll
Cannot start the driver service on http://localhost:50909/

Operating System

Win11

Selenium version

C# 4.27.0

What are the browser(s) and version(s) where you see this issue?

133.0.3 (32 bit)

What are the browser driver(s) and version(s) where you see this issue?

GeckoDriver 0.35

Are you using Selenium Grid?

Not used

[github-actions]

@linuxaged, thank you for creating this issue. We will troubleshoot it as soon as we can.

---

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Thank you!

[nvborisenko]

Selenium.WebDriver.GeckoDriver package is not supported by Selenium. This way is better: https://www.selenium.dev/documentation/selenium_manager/

In any case please provide logs: https://www.selenium.dev/documentation/webdriver/troubleshooting/logging/

[github-actions]

We need more information about this issue in order to troubleshoot.

Please turn on logging and re-run your code. Information on how to adjust logs for your language can be found in our
Troubleshooting documentation.

[linuxaged]

run the manager manually:

D:\workspace\SeleniumCSharpProject\bin\Debug\net9.0\selenium-manager\windows>selenium-manager.exe --proxy="127.0.0.1:12334"  --browser "firefox" --language-binding csharp --output json
{
  "logs": [
    {
      "level": "INFO",
      "timestamp": 1736156649,
      "message": "Driver path: C:\\Users\\bonsmile\\.cache\\selenium\\geckodriver\\win64\\0.35.0\\geckodriver.exe"
    },
    {
      "level": "INFO",
      "timestamp": 1736156649,
      "message": "Browser path: C:\\Program Files (x86)\\Mozilla Firefox\\firefox.exe"
    }
  ],
  "result": {
    "code": 0,
    "message": "",
    "driver_path": "C:\\Users\\bonsmile\\.cache\\selenium\\geckodriver\\win64\\0.35.0\\geckodriver.exe",
    "browser_path": "C:\\Program Files (x86)\\Mozilla Firefox\\firefox.exe"
  }
}

but still the same error:

[nvborisenko]

@linuxaged what if you start C:\\Users\\bonsmile\\.cache\\selenium\\geckodriver\\win64\\0.35.0\\geckodriver.exe manually?

[linuxaged]

@linuxaged what if you start C:\\Users\\bonsmile\\.cache\\selenium\\geckodriver\\win64\\0.35.0\\geckodriver.exe manually?

1737593500496 geckodriver INFO Listening on 127.0.0.1:4444

[Maheshkale447]

I am facing this issue "Cannot start the driver service on http://localhost:5090" when there is some proxy configured on system. I resolved it by adding localhost in NO_PROXY environment variable.

I faced it using selenium dotnet for chrome and edge.

Though this solution works, we need to do it manually. It will be better if its by default handled by selenium.

[github-actions]

This issue was closed because we did not receive any additional information after 14 days.