Many of my url\'s on my site www.mysite.com/Display.aspx?ID=128
gets displayed to users as
www.mysite.com/Display.aspx?ID=128&AspxAutoDetectCookieSuppor
...or if you don't want cookieless sessions, check if you have the following property in your node: cookieless="AutoDetect" If you want to use cookies, but don't want that querystring attribute, remove cookieless="AutoDetect"
cookieless="AutoDetect"