Hi,

In IIS 7, Windows Authentication is not installed by default. You need to explicitly install it by the following steps:

• Enter Control Panel
• Select "Programs and Features"
• Click "Turn Windows features on or off"
• Select IIS -> world Wide Web Services -> Security
• Select Windows Authentication checkbox
• Click OK

I hope this helps.

Yes, if it is vista ultimate or business version, but not home premium that I use.

I still do not get the solution, please read: http://forums.microsoft.com/forums/ShowPost.aspx?PostID=3399420&SiteID=1 

Hi,

in case the project is on local IIS server, you need to enable Integrated
Windows Authentication on the local IIS.

1. Open IIS Manager (Internbet Information Services)
2. Right-click the website (in case you run it locally you only have
Default web site) and pick Properties
3. Choose "Directory Security" tab and click Edit on "Anonymous access and
authentication control"
4. In the opening window, uncheck "Allow Anonymous access" and check
"Integrated Windows Authentication" (allowing anonymous can make that you
don't have enough permissions to debug)

After that you also need to make sure your NT Debugger user is on Debugger users group

(and in practise to attach to the aspnet_wp.exe process it also
needs to be admin unless you change local security policies