Windows opened out of
Microsoft Edge are not supported
Windows which are opened as actual new
Microsoft Edge windows, and not as tabs, are not supported.
Silk Test Classic cannot close such windows correctly, and the agent is in an invalid state after closing such a window.
confirm(), if these alerts were opened in an iframe or frame.
Cannot open the native browser context menu
If a test includes a right click in
Microsoft Edge, which opens the native browser context menu, the test will hang. This issue does not occur with HTML menus opened by
Cannot execute tests against
Microsoft Edge with UAC disabled
When executing tests against
with UAC disabled, the following error message displays:
Failed to start application 'Edge'. Unable to parse remote response: Unknown error
To solve this issue, enable UAC.
Why do I get the error "Cannot start Edge because the Windows Feature Microsoft WebDriver is not installed"?
If your system uses the Windows 10 October 2018 Update or a later version of Microsoft Windows 10, and the Windows Feature
Microsoft WebDriver is not installed on your system, you might get the following error when trying to test on
Cannot start Edge because the Windows Feature Microsoft WebDriver is not installed. See the topic Known Issues > Microsoft Edge in the Help.
To solve this issue, ensure that the Windows update on your system is working properly. If you using an internal Windows Update
server, perform the following actions:
- Ask your IT administrator to add the Windows Feature Microsoft WebDriver to the Windows update server.
- Install the Windows Feature Microsoft WebDriver. For additional information on installing the feature, refer to