I just joined a team to manage a asp.net 4 website with 1000+ pages of the url format
http://www.abcdefgh.com/ShowBooks.aspx?ID=1420
but it gets changed to
http://www.abcdefgh.com/(S(sdfdsf9835fgfdjgdfgderd55)X(1))/ShowBooks.aspx?ID=1420
or
http://www.abcdefgh.com/ShowBooks.aspx?ID=1420&AspxAutoDetectCookieSupport=1420
This I suppose is happening from a couple of months and the traffic is heavy on this site. How can i prevent this url changing from happening. I want all url's to be of this format only
http://www.abcdefgh.com/ShowBooks.aspx?ID=1420
I have noticed three entries in my web.config
<authentication mode="Forms">
<forms cookieless="UseCookies" loginUrl="~/NoAccess.aspx" name="FORMAUTH"/>
</authentication>
<sessionState cookieless="AutoDetect"/>
<anonymousIdentification cookieless="AutoDetect" enabled="false"/>
What disadvantage will it have if I remove cookieless attribute from these url's. WIll it break the earlier bookmarked urls or will Google SEO be affected in any way?
Please help me with details.