Hi The field 'FileType' in the NT_Create_ANDX is very sensitive. I have observed NT cliens crashing if that field was set to a value 1. I refered the SNIA document, and the description is missing :)
Generally I have observed that if the create response is not correct, NT client will crash ( BSOD ). W2K handles the same packet without crashing. Hope this helps. Yogesh.
