.accda file is a Microsoft Access 2007, 2010 database add-on.
Currently only Access 2007 and Access 2010 use this file type. Previous MS Access
versions use .mdb file type.
To break password protected Access database add-on (.accda file) you can use
Access
Password program. Access
Password recovers all Access password types and supports all
Access versions.
Possible password types:
Password to open
Access database may contain a VBA project inside. To
recover password-protected VBA project you should use
VBA Password program.