La versione 4.1.1 non funziona.
Occorre installare la 4.1
Come descritto in https://stackoverflow.com/questions/58123543/mamp-on-windows-10-apache-server-starts-and-then-stops
- Turn off your MAMP Server.
- Locate your db folder for mysql. Example: C:\MAMP\db\mysql
- Rename the mysql-bin.index file to mysql-bin_old.index (or anything really)
- Turn on your MAMP Server
This is a very common issue with MAMP. If this happened to you out of the blue, this is probably the fix.