I am using a A.mdb database. You know when connecting the database Microsoft automatically create a .ldb file. Unfortunately my PC shutdown when connecting the database. As a result after restart the PC...
Try renaming the .ldb file to a different extension like .ldbx. It’s been ages since I used Access but that .ldb used to be the list of users who were connected, and sometimes we had to get everyone out of the app and delete that file. That might reset things. If it doesn’t, just rename it back.
Read more here: http://myitforum.com/myitforumwp/community/groups/windows-8/forum/topic/cant-open-mdb-file-how-view-it/