A family of Microsoft relational database management systems designed for ease of use.
To be clear about the problem.
How are you trying to do the Compact & Repair on the accdb?
Is this the Back End or the Front End accdb?
This part of the problem statement is not clear to me, "....and when trying to Decrypting Database Option Not Available." Can you explain further?
One possible step might be creating a new, empty accdb and importing objects from the existing accdb, but we're not at that point quite yet.