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POIs it possible to retrieve data from Active Directory by impersonating a Windows authenticated user in ASP.NET?
 

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  1. POIs it possible to retrieve data from Active Directory by impersonating a Windows authenticated user in ASP.NET?
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    <p>I've been trying to solve this problem all day, and I've read some conflicting information within the standard google message board answers.</p> <p>What I'm trying to do is retrieve a domain user's (that is, the currently logged in user's) email address from active directory. My ASP.NET 4 website is setup for Windows Authentication and everything works fine until the active directory calls.</p> <p>When I do the following, I get a COMException on the search.findAll() line. The exception message is "An operations error occured" (Very helpful message eh?) (Stripped down code for readability)</p> <pre><code>WindowsIdentity winId = (WindowsIdentity)HttpContext.Current.User.Identity; WindowsImpersonationContext wic = null; wic = winId.Impersonate(); using (DirectoryEntry root = new DirectoryEntry(rootQuery)) { String userQuery = GetUserQuery(); DirectorySearcher searcher = new DirectorySearcher(root); searcher.SearchScope = SearchScope.Subtree; searcher.Filter = userQuery; SearchResultCollection results = searcher.FindAll(); return (results[0].Properties["proxyaddresses"][0]).ToString(); } </code></pre> <p>So basically I want to impersonate the logged in user to make the call. Note this code works as expected if I pass in my credentials directly to the DirectoryEntry constructor. Also, I receive the same error if I get rid of the impersonation code and set application wide impersonation in the web config.</p> <p>So I guess my question, before I waste any more time on this, is this even possible? Or do you <em>have</em> to specify a username and password to access AD?</p> <p>BTW on my dev box I'm running IIS5, but will probably deploy to IIS6.</p> <p>edit:</p> <p>as requested:</p> <pre><code>rootQuery = @"LDAP://{0}.com/DC={0}, DC=com"; userQuery = @"(&amp;(samAccountName={0})(objectCategory=person)(objectClass=user))"; </code></pre> <p>with the proper domain and user specified.</p>
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    1. COAsp.Net 4 on IIS 5 - how is that even possible?
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    2. CO@Charles Just set the asp.net version to 4 in the asp.net tab of your website properties
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    3. CO@Charles Boyung - I too wondered about doing that - http://stackoverflow.com/questions/3194866/running-asp-net-4-0-with-iis-5-1
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