[🐛 Bug]: error sending request for url (https://msedgedriver.azureedge.net/LATEST_RELEASE_138_WINDOWS)

[nvborisenko]

Description

It has been working, but at some point of time it stopped. I didn't change my code!

But now I always see:

Unhandled exception. OpenQA.Selenium.WebDriverException: Error starting process: E:\Temp\ConsoleApp73\ConsoleApp73\bin\Debug\net9.0\selenium-manager\windows\selenium-manager.exe  --browser "MicrosoftEdge" --language-binding csharp --output json --debug
 ---> OpenQA.Selenium.WebDriverException: Selenium Manager process exited abnormally with 65 code: E:\Temp\ConsoleApp73\ConsoleApp73\bin\Debug\net9.0\selenium-manager\windows\selenium-manager.exe  --browser "MicrosoftEdge" --language-binding csharp --output json --debug
Standard Output >>
{
  "logs": [
    {
      "level": "DEBUG",
      "timestamp": 1752870644,
      "message": "msedgedriver not found in PATH"
    },
    {
      "level": "DEBUG",
      "timestamp": 1752870644,
      "message": "MicrosoftEdge detected at C:\\Program Files (x86)\\Microsoft\\Edge\\Application\\msedge.exe"
    },
    {
      "level": "DEBUG",
      "timestamp": 1752870644,
      "message": "Detected browser: MicrosoftEdge 138.0.3351.95"
    },
    {
      "level": "DEBUG",
      "timestamp": 1752870644,
      "message": "Reading msedgedriver version from https://msedgedriver.azureedge.net/LATEST_RELEASE_138_WINDOWS"
    },
    {
      "level": "ERROR",
      "timestamp": 1752870645,
      "message": "error sending request for url (https://msedgedriver.azureedge.net/LATEST_RELEASE_138_WINDOWS)\n\nCaused by:\n    0: client error (Connect)\n    1: dns error: No such host is known. (os error 11001)\n    2: No such host is known. (os error 11001)"
    }
  ],
  "result": {
    "code": 65,
    "message": "error sending request for url (https://msedgedriver.azureedge.net/LATEST_RELEASE_138_WINDOWS)\n\nCaused by:\n    0: client error (Connect)\n    1: dns error: No such host is known. (os error 11001)\n    2: No such host is known. (os error 11001)",
    "driver_path": "",
    "browser_path": ""
  }
}

<<

   at OpenQA.Selenium.SeleniumManager.RunCommand(String fileName, String arguments)
   --- End of inner exception stack trace ---
   at OpenQA.Selenium.SeleniumManager.RunCommand(String fileName, String arguments)
   at OpenQA.Selenium.SeleniumManager.BinaryPaths(String arguments)
   at OpenQA.Selenium.DriverFinder.BinaryPaths()
   at OpenQA.Selenium.DriverFinder.GetDriverPath()
   at OpenQA.Selenium.Chromium.ChromiumDriver.GenerateDriverServiceCommandExecutor(DriverService service, DriverOptions options, TimeSpan commandTimeout)
   at OpenQA.Selenium.Chromium.ChromiumDriver..ctor(ChromiumDriverService service, ChromiumOptions options, TimeSpan commandTimeout)
   at OpenQA.Selenium.Edge.EdgeDriver..ctor(EdgeDriverService service, EdgeOptions options, TimeSpan commandTimeout)
   at OpenQA.Selenium.Edge.EdgeDriver..ctor(EdgeDriverService service, EdgeOptions options)
   at OpenQA.Selenium.Edge.EdgeDriver..ctor(EdgeOptions options)
   at OpenQA.Selenium.Edge.EdgeDriver..ctor()

Reproducible Code

using OpenQA.Selenium.Edge;

using var driver = new EdgeDriver();

---

ℹ️ Last known working version: 4.34.0

[selenium-ci]

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

Selenium Triage Team: remember to follow the Triage Guide

[nvborisenko]

I searched similar issues by error sending request for url, but didn't find something similar.

Most likely this is something related to configuration.

[Cyber5imon]

msedgedriver.azureedge.net does not resolve to an ip address

[DamonKBrown]

As a workaround, I've just set the environment variable "SE_DRIVER_MIRROR_URL" to the proper url: "https://msedgedriver.microsoft.com"

[AutomationPanda]

I hit this issue as well. I'm commenting to track it.

[cgoldberg]

I'm commenting to track it

It has already been fixed, and a workaround has been given until the fix is released. #16058 (comment)

[nvborisenko]

Assuming the fix is ready, could we plan to roll it out to all users?

[dhavewala]

As a workaround, I've just set the environment variable "SE_DRIVER_MIRROR_URL" to the proper url: "https://msedgedriver.microsoft.com"

Just putting it on the record. This workaround does not address solutions where an instance each of Chrome and Edge are being used in the Tests.

The workaround assumes only one Browser is used in the testing flow.

[cgoldberg]

This workaround does not address solutions where an instance each of Chrome and Edge are being used in the Tests.

That's a good point.

I don't use .NET, but here are some other workarounds in Python:

1. You could set the environment variable in code, and reset it after you instantiate the browser (this wouldn't work if you run tests in parallel).

import os
from selenium import webdriver

os.environ["SE_DRIVER_MIRROR_URL"] = "https://msedgedriver.microsoft.com"
driver = webdriver.Edge()
del os.environ["SE_DRIVER_MIRROR_URL"]

2. You could pass the --driver-mirror-url argument when starting Selenium Manager. I couldn't find anywhere this is exposed, so the solution I came up with involves monkey patching:

from selenium import webdriver
from selenium.webdriver.common.driver_finder import DriverFinder

def _to_args(self):
    return ["--browser", "edge", "--driver-mirror-url", "https://msedgedriver.microsoft.com"]

DriverFinder._to_args = _to_args

driver = webdriver.Edge()

Note: none of these workarounds are ideal, and hopefully the fix rolls out soon.