Select Tools --> Internet Options
Click on the General tab and then Delete button
Make sure to uncheck Preserve Favorites website data and check both Temporary Internet Files and Cookies then click Delete
Further Troubleshooting The above procedure for clearing cache and cookies should work for the majority of websites, but certain website and applications such as WiscMail require a more thorough procedure. If you are still having issues, try to steps below.
Close out of Internet Options. Click on Tools and select Developer Tools.
In the Developer Tools window, click on Cache and select Clear Browser Cache
Click Yes to confirm the clearing of the browser cache