Thank you for your post.
FileMaker, Inc. will not unlock any file except under rare circumstances (court order, Homeland Security, etc.).
> A file that I used for codes had been stored without being locked
Was it created with FMP6 ?
If so, you can try to open it with:
1) Account: Admin PWD: ( blank )
2) Account: Admin PWD: Admin
3) the same of 1) and 2) but lowercase.
Well, after hacking away (100 times or so), I finally discovered the correct combination. Unfortunately, I can't figure out how to unlock the file, but at least I got the information. Thanks for the "admin" suggestion.