The Microsoft Jet database engine cannot open the file <name>. It is already opened exclusively by another user, or you need permission to view its data. (Error 3051)

Possible causes:

• You must have permission to read data in the specified file in order to view its data. To change your permission assignments, see your system administrator or the table or query's creator.
• You tried to open the indicated file exclusively, but another user already has the file open.