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POCom Interop error when using impersonation on ASP.NET
 

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  1. POCom Interop error when using impersonation on ASP.NET
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    <p>I am trying to write a ASP.NET page that looks at group membership for authorization of a site. I have code that is working when run in the local debugger and when locally logged into the web server itself. However, when i try to access the page from a remote web browser, i get an error.</p> <pre><code>System.Runtime.InteropServices.COMException: An operations error occurred. </code></pre> <p>I have impersonation turned on and I have it set to only Windows Authentication turned on. Is there something I am missing?</p> <p>Here's the stack trace:</p> <pre><code>[COMException (0x80072020): An operations error occurred.] System.DirectoryServices.DirectoryEntry.Bind(Boolean throwIfFail) +387793 System.DirectoryServices.DirectoryEntry.Bind() +36 System.DirectoryServices.DirectoryEntry.get_AdsObject() +31 System.DirectoryServices.PropertyValueCollection.PopulateList() +21 System.DirectoryServices.PropertyValueCollection..ctor(DirectoryEntry entry, String propertyName) +49 System.DirectoryServices.PropertyCollection.get_Item(String propertyName) +135 System.DirectoryServices.AccountManagement.PrincipalContext.DoLDAPDirectoryInitNoContainer() +1124 System.DirectoryServices.AccountManagement.PrincipalContext.DoDomainInit() +37 System.DirectoryServices.AccountManagement.PrincipalContext.Initialize() +118 System.DirectoryServices.AccountManagement.PrincipalContext.get_QueryCtx() +31 System.DirectoryServices.AccountManagement.Principal.FindByIdentityWithTypeHelper(PrincipalContext context, Type principalType, Nullable`1 identityType, String identityValue, DateTime refDate) +14 System.DirectoryServices.AccountManagement.Principal.FindByIdentityWithType(PrincipalContext context, Type principalType, String identityValue) +73 System.DirectoryServices.AccountManagement.UserPrincipal.FindByIdentity(PrincipalContext context, String identityValue) +25 WebConfigValue.GroupForms.GroupSearchForm1.GetGroupNames(String userName) in C:\dev\code\Projects\Web\WebConfigValue\WebConfigValue\default.aspx.cs:224 WebConfigValue.GroupForms.GroupSearchForm1.Page_Load(Object sender, EventArgs e) in C:\dev\code\Projects\Web\WebConfigValue\WebConfigValue\default.aspx.cs:45 System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +51 System.Web.UI.Control.OnLoad(EventArgs e) +92 System.Web.UI.Control.LoadRecursive() +54 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +772 </code></pre> <p>It appears to be happening in the FindByIdentity portion of the GetGroupNames code i wrote.</p> <pre><code> public List&lt;string&gt; GetGroupNames(string userName) { var result = new List&lt;string&gt;(); using (PrincipalContext pc = new PrincipalContext(ContextType.Domain, "NPC")) { using (PrincipalSearchResult&lt;Principal&gt; src = UserPrincipal.FindByIdentity(pc, userName).GetGroups(pc)) { src.ToList().ForEach(sr =&gt; result.Add(sr.SamAccountName)); } } return result; } </code></pre> <p>Like i said, it works fine when run locally on my dev box or on the web server. It's only when accessing from a remote brower that i get the error.</p>
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    1. USSpaceCowboy74
    1. USSpaceCowboy74
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    1. COIs there an Inner exception? or more of an error? Perhaps you should post your whole stack trace to give a better idea of what is going on. It would also help if you posted the code that gave you the error.
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      1. POCom Interop error when using impersonation on ASP.NET
      1. USpaqogomez
 

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