USB-C charger not working (MBP 2017) My 61W charger doesn't charge my MBP 2017. But when I charge with my friend's apple charger it works. How do I fix this?
This is just a guess as you've not mentioned the cables you're using, but: 

Could it be that you're using a non e-Marked USB C cable? If so, the cable may be the problem. Try your charger with your friend's cable to check this.