Clear Cookies Before Starting Survey: What Are Cookies? Cookies on computers are small text files that are used to store information about your preferences. Websites use cookies to store your username and passwords so you don?t have to sign in every single time you get on the website. Cookies can also be considered bad in that they can track the sites that you visit which is a main cause in Surveys Not Unlocking the Download. Firefox: Open Firefox on your computer. Click the Firefox button at the top of the window and select History. Click Clear Recent History. Change Time range to clear to Everything. Expand the list of history items by clicking the arrow next to Details. Check Cookies and click the Clear Now button. Internet Explorer: Once your browser is open, select the Tools menu and click Internet Options and select the General tab. To delete all cookies, in the Browsing History section, click Delete. Then check the box next to Cookies?. Check the other boxes at your own discretion. Click Delete. Google Chrome: Once your browser is open, press Control + Shift + Delete. Ensure that delete cookies is selected. Click clear browsing data. Alternatively you can click the spanner icon in the top left, select clear browsing data and repeat steps 2 and 3