User/Pwd asked when displaying Image

[Cheap Scotch Ron]

Check to ensure that the local userid that is defined for anonymous access has read access to the folder (as well as its content) that contains the images.

The userid is usually IUSR_servername. You can check by going to IIS, right click the virtual directory of the site, select the Directory Security tab. Ensure Anonymous access is selected and note the userid.

Then right click the folder that contains the images and ensure this userid has read access to the folder. Also check the privs on the actual images. They should be same. If not, there is an option at the folder level to propagate the settings to the contents of the folder.

That should do it.

Alternatively, you could impersonate by setting the user and pass in the webconfig. google impersonate IIS. There are several entries on MS Technet that show you how.