Open Internet Explorer 7 and click the Tools menu.
Click the Delete Browsing History link at the top.
Under the Temporary Internet Files heading, click Delete files.
Click Yes when you see the prompt asking if you are sure you want to delete all temporary files.
Then close and reopen Internet Explorer
Internet Explorer 8
Once your browser is open, click the Tools menu.
Click on Delete Browsing History.
Select Temporary Internet Files.
Click the Delete button near the bottom of the window to delete your temporary files (i.e. clear your cache).
If you want the browser to automatically clear the cache whenever you close it, click the Advanced tab.
Click to check the box next to the Empty Temporary Internet Files folder when browser is closed option (in the section labeled Security).
Click OK. This will delete everything except cookies. Then close and reopen Internet Explorer
Note: Internet Explorer 8 has a "feature" which retains some cookies even after you clear your cache if you do not UNCHECK the "Preserve Favorites Website Data."
Internet Explorer 9
Once your browser is open, click the cog at the top right to open the settings menu.
Then, select Safety and Delete Browsing History
Select Temporary Internet Files. You will also need to uncheck all the other boxes, including Preserve Favorites website data. Note: This option makes the window also delete objects from websites in your Favorites folder, which is necessary to completely clear your cache.
Click the Delete button near the bottom of the window to perform the operation (i.e. clear your cache by deleting temporary files).
Your computer will take a few moments to complete the process. Close Internet Explorer and then reopen it.
Internet Explorer 10
Choose Tools from top right panel menu in Internet Explorer. This will look like a cog.
From drop down menu choose Internet Options.
Click on the General tab and scroll down to Browsing History. Press the Delete button. This will display another window. Please make sure that all boxes are ticked but untick the first one: Preserve Favourites websites data; this will clear the cache and cookies. Note: this will also clear your password to Webdadi.