When I run the page and enter my login, I got login but when I click to a secure Admin page I got the following error:

Server Error in '/Membership' Application.

---

Access is denied.

 Here are my Web.config setting:

 <?xml version="1.0"?>
<configuration xmlns="http://schemas.microsoft.com/.NetConfiguration/v2.0">
    <appSettings/>
    <connectionStrings/>
  <location path="membership" allowOverride="false">
  <system.web>
   
        <siteMap defaultProvider="default" enabled="true">
        <providers>
          <add name="default"
                           type="System.Web.XmlSiteMapProvider "
              siteMapFile="Web.sitemap"
              securityTrimmingEnabled="true" />
        </providers>
      </siteMap>

here are my web.sitemap file:

<?xml version="1.0" encoding="utf-8" ?>
<siteMap xmlns="http://schemas.microsoft.com/AspNet/SiteMap-File-1.0" >
      <siteMapNode url="" title="Navigate Here"  description="">
      <siteMapNode url="Login.aspx" title="Login"  description="" />
      <siteMapNode url="CreateAccount.aspx" title="Create Account"  description="" />     
      <siteMapNode url="ChangePW.aspx" title="Change Password"  description="" />
      <siteMapNode url="ForgotPW.aspx" title="Forget Password"  description="" />
      <siteMapNode url="Logged Out.aspx" title="Logged Out"  description="" />
     
      <siteMapNode url="Admin\ManageAccount.aspx" title="Admin Account" roles="administrators" description="" >
      <siteMapNode url="Admin\Page1.aspx" title="Page 1" roles="administrators"/>
      <siteMapNode url="Admin\Page2.aspx" title="Page 2"/>
      <siteMapNode url="Admin\Admin.aspx" title="Admin"  description="" />
    </siteMapNode>
  </siteMapNode>
</siteMap>

and my Admin/web.config file:

<?xml version="1.0" encoding="utf-8"?>
<configuration xmlns="http://schemas.microsoft.com/.NetConfiguration/v2.0">
    <system.web>
        <authorization>
            <allow roles="administrators" />
            <allow roles="Admin" />
            <deny users="*" />
        </authorization>
    </system.web>
</configuration>

can someone please tell what is the problem? I have been trying for many times to fix it. 

try removing <location path="membership" allowOverride="false"> cause what u included in here is a folder "membership", where path points to a file, for that ur getting this error.

Hope this helps

if i remove the <location path="membership" allowOverride="false"> my sitemap will not show up at all.

Try to replace "membership" with one of the pages, and try to access this page

can u see ur sitemap in this page ?