Remove the password from Microsoft Access file

Access PassView

This utility reveals the database password of every password-protected mdb file that created with Microsoft Access 95/97/2000/XP or with Jet Database Engine 3.0/4.0 . It can be very useful if you forgot your Access Database password and you want to recover it.

for old versions of Access I've had luck with this: http://jackcess.sourceforge.net/

import com.healthmarketscience.jackcess.*;  

Database db=Database.open(new File("xxxx.mdb"));  
System.out.println(db.getDatabasePassword() );