So you can connect to from your Apple device (iPhone, Mac, iPad, etc) but you cannot connect to it from your Windows 10 computer.
This occurs because Microsoft doesn’t natively recognize .local extensions.
Install iTunes onto your Windows 10 computer. This will add the bonjour service which will allow you to connect to octopi.local
After you install iTunes, visit http://octopi
You can now use your Windows 10 system with OctoPrint