Prepare to Share
Password Encryption and simple file level security can be managed with the
Microsoft Access Database Tools. This demonstration begins with a
discussion on how to open the database exclusively so that you can set the
security.
Before you begin: Open the Database
Exclusively
Go to Office->Open.
Browse for the
database.
Look for the Open button. It is in the bottom right
corner of the Browse window.

Click on the arrow and select: Open Exclusive.