# Supported capabilities, browsers, and platforms in Device Farm desktop browser testing
Browser support

This topic lists the supported configurations of browsers and operating systems. An exception is raised if you request a browser and operating system combination that is not supported.

Values here are suitable for parametrized test suites.

## Supported browsers


The following browsers are supported:


| Name | `browserName` value | Supported platforms | 
| --- | --- | --- | 
| Google Chrome | chrome | windows | 
| Mozilla Firefox | firefox | windows | 
| Microsoft Edge (Chromium) | MicrosoftEdge | windows | 

**Note**  
AWS Device Farm no longer supports Microsoft Internet Explorer because Microsoft has stopped providing security updates and technical support for older versions of Internet Explorer. For more information, see [Microsoft's announcement of IE end of support](http://microsoft.com/en-us/microsoft-365/windows/end-of-ie-support). 

## Supported capabilities


The desktop browser testing feature does not implement all capabilities outlined in the [W3C WebDriver documentation](https://w3c.github.io/webdriver/#capabilities). Extension capabilities used by Device Farm desktop browser testing are prefixed with `aws:`. The following capabilities are used by the Device Farm WebDriver node:

`browserName` (string, required, no default)  
Name of the browser to use for the session. Must be one of the [supported browsers](#techref-support-browsers). *This value is always lowercase.*

`browserVersion` (string, required)  
Version of the browser to launch; one of `latest`, `latest-1`, `latest-2`  
Device Farm desktop browser testing does not support requesting specific releases of browsers.

`platform` (string, optional, defaults to `windows`)  
Platform (operating system) to use when creating the session. Must be one of the [supported platforms](#techref-support-platforms).

`aws:maxDurationSecs` (integer, optional, defaults to `900`)  
Maximum duration of the session before it is forcibly closed, in seconds. Range: `180` to `2400`.

`aws:idleTimeoutSecs` (integer, optional, defaults to `120`)  
Maximum delay between WebDriver commands before the session is forcibly closed. Range: `30` to `900`

The following are not allowed:

`w3c` (in Chrome)  
Setting this capability to `false` will result in an error.

`binary`  
Setting this capability will result in an error.

`args`  
The following browser command line parameters are not allowed:  
+ `--headless` (Chrome)
+ `-headless` (Firefox)
+ `--user-data-dir`
+ `--no-sandbox` (Chrome and Firefox)

All other capabilities are passed directly to the target browser-specific WebDriver. These arguments are not officially supported by Device Farm. Their use might result in unexpected behavior.

## Supported platforms


The following platforms are supported:


| Name | `platform` value | 
| --- | --- | 
| Microsoft Windows | windows |