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NtQueryObject hangs


When enumerating the processes, the NtQueryObject hung up on Win2003. It's not happening to all processes, but just a few.

Any info about that is appreciated.
1 Solution
As you may know, these NtXxxxx functions are "Windows internal" functions and NtQueryObject may stop being supported without warning.  Quirks and oddities of usage are not documented.  For instance, one such quirk is discussed here:
What kind of objects are you querying?  
What options are you using in the function call?
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