Microsoft Arc Touch mouse doesn't want to connect in MacOS High Sierra I've been able to pair a Microsoft Arc Touch Mouse Surface with my MacBook ever since Yosemite, but when I updated to High Sierra the mouse stop connecting. When I turn on the mouse, the Bluetooth sensor just flashes and the LED light below the scroll turns green and then red. Normally this is an indication that I need to change the batteries, but I have already changed them by new ones. What else can I do?
After a while, the mouse starts working with the next solution, but still, I don't know if it will fail again. 


In System Preferences > Bluetooth at the devices list, delete
mouse and keyboard pairing (maybe keyboard was in conflict, I
don't know)  
Pair the mouse. Turn on, press the Bluetooth button, wait for the device to be identified and connect.  
Then turn on the
keyboard and connect.