reopen the word file that encryped by minifilter,the file cannot be closed

NTFSD
1

when I open and close a .doc file that was encryped, then it can not be closed. when user FileSpy monitor it ,I find the error:
16 14:13:24.800 WINWORD.EXE FASTIO_QUERY_BASIC_INFO 966D4598 E:\asd.doc FAILURE
17 14:13:24.800 WINWORD.EXE IRP_MJ_QUERY_INFORMATION 00060870 966D4598 E:\asd.doc STATUS_SUCCESS FileBasicInformation
18 14:13:24.800 WINWORD.EXE FASTIO_UNLOCK_SINGLE 966D4598 E:\asd.doc FAILURE ByteOffset: 00000000-7FFFFF93 Key: N/A
19 14:13:24.800 WINWORD.EXE IRP_MJ_LOCK_CONTROL/IRP_MN_UNLOCK_SINGLE 00060000 966D4598 E:\asd.doc STATUS_SUCCESS
20 14:13:24.800 WINWORD.EXE FASTIO_UNLOCK_SINGLE 966D4598 E:\asd.doc FAILURE ByteOffset: 00000000-7FFFFFA7 Key: N/A
21 14:13:24.800 WINWORD.EXE IRP_MJ_LOCK_CONTROL/IRP_MN_UNLOCK_SINGLE 00060000 966D4598 E:\asd.doc STATUS_SUCCESS
22 14:13:24.800 WINWORD.EXE FASTIO_UNLOCK_SINGLE 966D4598 E:\asd.doc FAILURE ByteOffset: 00000000-7FFFFFCF Key: N/A
23 14:13:24.800 WINWORD.EXE IRP_MJ_LOCK_CONTROL/IRP_MN_UNLOCK_SINGLE 00060000 966D4598 E:\asd.doc STATUS_SUCCESS
How can i solve it

2

It may be locked and cannot be unlock. I have never come across such a problem.
I hope someone give me an idea.