I would like you to please manually reset Box Drive. See steps below:
In rare instances Box Drive fails to launch. Manually resetting Box Drive can often resolve this.
Note
The procedure to manually reset Box Drive on a Mac is different depending on if you are running Box Drive in File Provider Extension (FPE) mode or in kernel-based mode. See Modes of operation in Mac for details.
To manually reset Box Drive on a Mac (File Provider Extension mode)
Archive all files that are not synced (not uploaded to Box) from "~/Library/CloudStorage/Box-Box" and move it to a new folder at "~/Box-Box (Archive)
Note
If you already have a "~/Box-Box (Archive)" folder from a previous manual reset, the folder will be named "~/Box-Box (Archive) 2", or if that name is already taken, "~/Box-Box (Archive) 3", and so on.
Exclude from the above archive files that are “up-to-date” or synced on Box
Re-create the parent hierarchy of the archived files
Restart Box Drive and follow the prompt to log back in.
To manually reset Box Drive on a Mac (kernel-based mode)
Navigate to your ~/Library folder: In Finder, click the Go menu, press and hold the Alt (Option) key, and then click Library.
See if any files exist in ~/Library/Application Support/Box/Box/unsyncedFiles. These are files that have not been synced (not uploaded to Box). If these files do exist, and if you want to keep them, copy them to any location outside of ~/Library/Application Support/Box/Box/unsyncedFiles (such as your desktop) before proceeding with the steps below, which will delete these files.
Open a Terminal window and run the following command:
This command will delete Box Drive preferences and application data
Restart Box Drive and follow the prompt to log back in.
Once you restart Box Drive, you can review any archived unsynced files (File Provider Extension mode) or unsynced files you moved elsewhere (kernel-based mode) and either upload them manually or delete them to free up hard drive space.