Can't open file on NTFS. returned 0xC0000043

Hi all,

I’m developing a file system filter driver.
I saved some informations on file, and read from file during my driver’s
DriverEntry.
My driver’s startvalue is ‘1’.
But, from time to time I can’t open that file and return 0xC0000043.
I know it’s STATUS_SHARING_VIOLATION but don’t know why it returned.
It runs well on FAT.
Thanks in advance.

eddie.

One more information for my question.
The problem occurred only notebook.
It runs well on desktop PC.

Thanks,

eddie.