A family of Microsoft relational database management systems designed for ease of use.
Click the Start button and click on Control Panel. When the Control Panel opens, click on Programs and Features. When the dialog box opens select MicroSoft Office. Then Change.
What you want to do is to do a full install of Office. That will install the security wizard for Access for MDB files.
Then you can open your database and click on the File tab>Info>Manage Users & Permissions>User Level Security wizard. Create a new mdw file using the PID stuff of the old file. Sset yourself up in the Admins Group if it doesn't default to it.