Google Pixel and Pixel XL owners have been having issues with file transfers from Apple MacBooks via the stock USB-C to USB-A cable. As it turns out, the old Android File Transfer program might be to blame, as it hasn't been updated since 2012.
Google January 14, 2017
Transferring files will never be the same again with the new Portal app from Pushbullet. The app allows Android users to transfer files from their Windows PC to their smartphones or tablets quickly and easily.
Apps/Software June 17, 2015