Microsoft Bluetooth Mouse 3600 is not linking to MacBook Air (13-inch, Early 2011) with High Sierra 10.13.6
Hi Guys,
I had this problem and I decided to use another mouse. Now that one just died this week, and I tried to see if the problem with the 3600 bluetooth mouse was solved. I didn't find anything, but the Apple Helpdesk gave me the brilliant solution: Reset the SMC of your Mac. It worked!!
https://support.apple.com/en-us/HT201295