Users are complaining that they can't login to our website when using Firefox 5. All other browsers appear to work, including previous versions of Firefox. I can resolve the issue on the user's side by emptying their cache and setting browser.cache.check_doc_frequency to 1 -- but this is not an efficient solution. I've seen a lot of posts from others having the same problem and have tried all manners of meta tags trying to tell Firefox not to cache. Currently using, to no avail, and based on posts from others: <meta http-equiv="expires" content="0"/> <meta http-equiv="cache-control" content="no-cache,no-store,must-revalidate,max-age=-1"/> <meta http-equiv="pragma" content="no-cache,no-store,private,must-revalidate,max-stale=0,post-check=0,pre-check=0"/> <meta http-equiv="expires" content="Tue, 01 Jan 1980 1:00:00 GMT"> What exactly must I do in either IIS or the page itself to have Firefox work? Again, all complaints are from 5, previous versions had no issue