ASP MENU ITEM ERROR ON SERVER

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C#

C#4.0

I am working with asp.net 4.0. I uploaded my published site on server. Asp.net menu item i used navigation url property for page navigation but on click on menu item it giving me error page not found . its working fine in my local dev env. as well on local iis server.

THE ASP MENU ITEM LINE IS: <asp:MenuItem Text="Home" Value="0" NavigateUrl="~/Default.aspx"></asp:MenuItem>
ON SERVER IT IS TAKING AS: http://alsearsnetwork.com/ default (http://alsearsnetwork.com/%20default in IE)
AND ON LOCAL IT IS LIKE : localhost//alsearsnetwork.com/default.aspx

i tried lot but unable to found any solution. please help