Starting with IE9, you can follow these simple steps to remove temporary internet files in Internet Explorer.
First, start Internet Explorer, then click on the settings gear in the upper right. When the menu opens, choose Safety, then click on Delete browsing history..., as shown in the image below:
This will open up the Delete Browsing History dialog box. Make sure to uncheck the first checkbox if it is checked, so that even the sites that are in your Favorites list get their temporary files removed, then click on the Delete button:
The removal process may take a few minutes, depending on the speed of your computer, amount of space devoted to temporary files, and when you performed this operation last.
Once it's complete (there may not be any notification that this is done), IE will start with a clean slate!