Important : the account that performs the search must be a member of the Administrators group to retrieve the ntSecurityDescriptor property. If this is not the case, the property value that is returned for ntSecurityDescriptor will be null.
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Muhammad Amin
محمد امين
mameenkhn
Contributor
2026 Points
391 Posts
Re: Out of range exception while trying to get user email address from Active Directory
Mar 26, 2012 04:35 PM|LINK
http://forums.asp.net/p/907421/1007517.aspx
check the above link it might help
also check these two properties
proxyAddresses
targetAddress
Important : the account that performs the search must be a member of the Administrators group to retrieve the ntSecurityDescriptor property. If this is not the case, the property value that is returned for ntSecurityDescriptor will be null.
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Muhammad Amin
محمد امين