 <p>Try any of this:</p> <pre><code>Response.Cache.SetExpires(DateTime.Now.AddSeconds(360)); Response.Cache.SetCacheability(HttpCacheability.Private) Response.Cache.SetSlidingExpiration(true); Page.Response.Cache.SetCacheability(HttpCacheability.NoCache) </code></pre> <p>Also see this <a href="http://stackoverflow.com/questions/533867/whats-the-best-method-for-forcing-cache-expiration-in-asp-net">question</a>.</p>