I have a Xampp web server running on another computer in the local network and my Mac can no longer access it after updating to High Sierra.
All other devices I have in the same Wi-Fi network connect to the web server using the server computer's IP address without any issues.
The only thing that changed, as far as I know, is that the Mac was updated to High Sierra.
Any guesses?
Best Answer
I am assuming you are using SSL with certificate that is SHA-1 signed, which was still allowed (with a warning) in macOS Sierra but in macOS High Sierra the connections will fail. I suggest you move to SHA-256 signed certificates for increased security and to avoid connection failures.
Source: Apple HT207459