RPA uses MS Access to store your data while working with it. Even if your data is saved as an Excel worksheet. If you receive the Database engine not found error, install Microsoft Access Database Engine 2010 Redistributable.
What version of RPA is currently installed on the machine?
What version of Access is installed?
If it was running before and is not now, was RPA or Access upgraded recently?
Foxtrot RPA 15.1.2 and earlier versions ran using Access 2010. RPA creates an Access output file to use while running botflow. When Microsoft introduced Access 2016, it was not compatible with Foxtrot RPA. We made changes in versions 15.1.4 and 15.1.7 to work with Access 2016, but both of these versions have defects that will not be resolved by Dev Team. The suggestion is to upgrade to version 15.1.10, which has resolutions for the Access compatibility issue and other defects.