When you try to validate credentials using .NET on Windows 10 you may get the rather confusing errror   System.IO.FileNotFoundException: The system cannot find the file specified.    The full exception trace looks like this   System.IO.FileNotFoundException: The system cannot find the file specified.    at System.DirectoryServices.AccountManagement.UnsafeNativeMethods.IADs.Get(String bstrName)    at System.DirectoryServices.AccountManagement.CredentialValidator.BindSam(String target, String userName, String password)    at System.DirectoryServices.AccountManagement.CredentialValidator.Validate(String userName, String password, ContextOptions connectionMethod)    at System.DirectoryServices.AccountManagement.PrincipalContext.ValidateCredentials(String userName, String password, ContextOptions options)    To resolve this make sure that the RegisteredOwner and  RegisteredOrganization string values are found here HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Nod...