Error encountered: Unknown error while using Microsoft Edge WebDriver

Question

Error encountered: Unknown error while using Microsoft Edge WebDriver

When attempting to utilize Microsoft Edge automation with Selenium, I keep encountering the following exception:

OpenQA.Selenium.WebDriverException: Unexpected error. Unknown error

The NuGet package I am using is Selenium.WebDriver.MicrosoftDriver version 17.17134.0.

My code consists of simply initializing the constructor as follows:

var driver = new EdgeDriver();

I have experimented with different overloads that were recommended:

var driver = new EdgeDriver(new EdgeOptions());

var driver = new EdgeDriver(pathToMicrosoftWebDriverExecutable);

However, none of these solutions have worked. I have ensured that the WebDriver version from Microsoft corresponds with the Edge version on the testing machine.

Is there a way to obtain a more detailed error message? It should be noted that all Selenium unit tests perform correctly with Firefox and Chrome WebDrivers, with only Edge presenting an issue.

c#selenium selenium-webdriver selenium-edgedriver

Answer 1

Answer №1

Although you mentioned having the same versions, I encountered the same error and found a solution that may be helpful to you.

It seems that Microsoft has stopped releasing the Web Driver as a standalone version, which could be causing the problem. (More information can be found here) Currently, Edge is at version 17763, while the NuGet package is at 17134. To resolve this, I had to install it as a standalone by navigating to Settings > Apps > Apps & features > Manage optional features." The link provided includes additional instructions.

After installing, I directed the driver to the location specified and it finally worked.

var driver = new EdgeDriver("C:\\Windows\\System32\\", edgeOptions);

Answer 2

Although you mentioned having the same versions, I encountered the same error and found a solution that may be helpful to you.

It seems that Microsoft has stopped releasing the Web Driver as a standalone version, which could be causing the problem. (More information can be found here) Currently, Edge is at version 17763, while the NuGet package is at 17134. To resolve this, I had to install it as a standalone by navigating to Settings > Apps > Apps & features > Manage optional features." The link provided includes additional instructions.

After installing, I directed the driver to the location specified and it finally worked.

var driver = new EdgeDriver("C:\\Windows\\System32\\", edgeOptions);

Answer 3

Answer №2

After some trial and error, I stumbled upon a solution that miraculously worked for my issue as well. I kept receiving the troublesome "Message: OpenQA.Selenium.WebDriverException : Unexpected error. Unknown error".

By following Brian Murphy's guidance on installing Microsoft Edge Driver as a Standalone through managing optional features, I was able to resolve the problem without having to modify any of my C# code. It's unclear where Windows placed the installation, but my test, which previously failed at Driver = new EdgeDriver(edgeService, options);

suddenly began to pass once more.

Answer 4

After some trial and error, I stumbled upon a solution that miraculously worked for my issue as well. I kept receiving the troublesome "Message: OpenQA.Selenium.WebDriverException : Unexpected error. Unknown error".

By following Brian Murphy's guidance on installing Microsoft Edge Driver as a Standalone through managing optional features, I was able to resolve the problem without having to modify any of my C# code. It's unclear where Windows placed the installation, but my test, which previously failed at Driver = new EdgeDriver(edgeService, options);

suddenly began to pass once more.

Answer 5

Answer №3

Although this solution doesn't guarantee to resolve all edge driver issues, I successfully overcame this error by downloading the specific edge driver that matches the version of edge installed on my system. You can find the appropriate driver here:

https://developer.microsoft.com/en-us/microsoft-edge/tools/webdriver/

In my scenario, using Edge version "88.0.705.74", I downloaded the following driver:

After downloading the driver, I extracted it locally. However, when specifying the directory in C#, it required the file name to be "MicrosoftWebDriver.exe" instead of "msedgedriver.exe". I renamed it accordingly:

EdgeOptions options = new EdgeOptions();
IWebDriver edgeDriver = new EdgeDriver("C:\\Users\\[username]\\Downloads\\edgedriver_win64", options);

Now the driver loads successfully, but I encountered a few other errors depending on the machine and account I was operating under. After resolving those issues, I was able to successfully navigate Edge to a page.

Answer 6

Although this solution doesn't guarantee to resolve all edge driver issues, I successfully overcame this error by downloading the specific edge driver that matches the version of edge installed on my system. You can find the appropriate driver here:

https://developer.microsoft.com/en-us/microsoft-edge/tools/webdriver/

In my scenario, using Edge version "88.0.705.74", I downloaded the following driver:

After downloading the driver, I extracted it locally. However, when specifying the directory in C#, it required the file name to be "MicrosoftWebDriver.exe" instead of "msedgedriver.exe". I renamed it accordingly:

EdgeOptions options = new EdgeOptions();
IWebDriver edgeDriver = new EdgeDriver("C:\\Users\\[username]\\Downloads\\edgedriver_win64", options);

Now the driver loads successfully, but I encountered a few other errors depending on the machine and account I was operating under. After resolving those issues, I was able to successfully navigate Edge to a page.

Error encountered: Unknown error while using Microsoft Edge WebDriver

Answer №1

Answer №2

Answer №3

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