Sorry for a perhaps very basic question, but here it goes:
I’ve developed a WP site locally on my Mac, with help from MAMP. Haven’t touched the site in a couple of months, and now I can’t connect. Simply get the “can’t establish connection to server” message in Safari.
I’ve tried to search for a solution, but found it hard. Is there an easy fix? I might have updated my system from Sierra to High Sierra since I last worked on the WP site, could that have anything to do with it?
As per my comment, your ports may be an issue since you have updated - make sure you also update MAMP to the latest version.
Once you have updated MAMP, try to use ports 80, 81, 443 etc. this should hopefully fix your issue.