Internet browsers use caching to store web pages. When you visit a webpage that has previously been stored, if the date on the page is the same date as the stored copy, then the computer will use that copy rather than re-downloading it again. Most of the time, this works without issue, but it can sometimes cause issues on sites that require authentication, like Deakin sites.
Occasionally, Deakin websites (such as DeakinSync, or Deakin Library) will display errors such as Error 431/Bad Message 431, or Page Can't be Found.
Don't panic—this is easily solved. You will merely need to clean your Cookies & Cache to get up and running again.
In order to clear your cache, the following external sites can assist with this process: