Box Drive will not sync and instead ignore or block certain file types.
Due to the saving behavior of Microsoft Access, it's likely that Box Drive will create duplicate copies of .accdb and .mdb files. Even one user working on a file can cause conflict copies due to how frequently Access makes changes to the database file. Box Drive users can copy the file out of the Box folder and copy the file back into the Box folder after the changes are made to upload the changes to Box.
Microsoft does not recommend using synchronization programs like Box Drive with OneNote notebooks:
"In general, OneNote notebooks should always be synced and moved by the OneNote application, and not by file based synchronization systems such as a client application"
Please see this Microsoft Support Page for more information on OneNote syncing best practices.
Box Drive does not support Mac package files. You will see an error from Finder if you attempt to copy a package file into Box Drive.
MORE INFO FOUND:
https://support.box.com/hc/en-us/articles/360044196773-Troubleshooting-Uploads-to-Box
https://support.box.com/hc/en-us/articles/360043696454-General-Limitations-When-Using-Box-Drive
https://support.box.com/hc/en-us/articles/360043695854-Windows-Specific-Limitations-for-Box-Drive
https://support.box.com/hc/en-us/articles/360043695774-Mac-Specific-Limitations-for-Box-Drive