Selenium InternetExplorerDriver, disable flash
Currently there are limited resources for disabling flash in InternetExplorerDriver. One method is to use BrowserStack along with your Selenium tests, and pass the noFlash capability into your tests.
caps.setCapability("browserstack.ie.noFlash", "true");https://www.browserstack.com/automate/java#enable-disable-flashhttps://www.browserstack.com/automate
BrowserStack is pretty easy to setup and integrate into your tests. I'd suggest using it for Internet Explorer if you must disable flash to test your web automation. Our company uses it for that reason specifically and it works out well.