- Open an Internet Explorer window and in the top menu bar select: Tools -> Internet Options.
- In the dialogue box that opens there should be an area labelled "Temporary Internet Files" which has a button you should click labelled "Delete Files...".
- It will then ask you to confirm the delete which you should do ensuring that you have also checked "Delete all offline content".
- This will then delete your Temporary Internet Files and will take a varying amount of time to complete depending on when they were last cleared.
Via key combination:
Delete Via menu: "Customize and control Google Chrome" (triple-dot button top right in your browser) > More tools... > Clear browsing data...
Note: You only need to check the one box called "Cached images and files", leaving the others unchecked to save you from having to log in to your sitres again (i.e. you can leave the Cookies unchecked)