Starting in 16.1, there has been a major change to how the remote agent database (and other dependencies) are deployed. In previous versions, the database and most dependencies were packaged directly into the Remote Agent installer. This tied each version of a remote agent to a specific database version, as well as added unnecessary size to the remote agent installer file.
In 16.1, we have introduced database packages. These packages allow MongoDb to be deployed without deploying a new version of the remote agent. As new versions and/or patches of MongoDb are released, they can easily be pushed to each Remote Integrator.
We have also added new functionality to automatically download the latest compatible MongoDb and Visual C++ runtime when a new Remote Integrator first connects. To enable this initial download-on-demand functionality, you must have the MongoDb and Visual C++ packages in your Gateway packages collection.
See Deploying MongoDb Packages
See Deploying the VC++ Runtime