Sorry for posting in an older thread. I just replaced my MacBook Pro with a Surface Book 2. When I plug my MBP's 87 watt USB-C charger in to my SB2, I get an error stating the device wasn't recognized, then another error stating the device is slow charging.
Interestingly, when I plug my USB-C monitor in (which provides 60w of charge power), I get no error notices at all.
The charger & cable are known good and charge the MacBook Pro without any trouble.
Any thoughts?