Para evitar la cache de las paginas asp asignaremos las siguientes addHeader
Response.Expires = -1 Response.AddHeader "Cache-Control", "no-cache" Response.AddHeader "Cache-Control", "private" Response.AddHeader "Cache-Control", "no-store" Response.AddHeader "Cache-Control", "must-revalidate" Response.AddHeader "Cache-Control", "max-stale=0" Response.AddHeader "Cache-Control", "post-check=0" Response.AddHeader "Cache-Control", "pre-check=0" Response.AddHeader "Pragma", "no-cache" Response.AddHeader "Keep-Alive", "timeout=3, max=993" Response.AddHeader "Expires", "Thu, 10 Ene 2012 05:00:00 GMT"