Error "NSURLErrorDomain: -1" on Safari, post updating to 15.0 on my MacBook Air

I'm also experience the same issue and it's only occurring with Safari. Clearing out history, all website data, restarting WiFi, and rebooting computer doesn't seem to correct it. The only thing that works for me is to completely close out Safari and open it again but even that gets really tedious...

Same here.

Just bought a new MBP. Mac OS 15 (Sequoia). Safari version 18.0 (20619.1.26.31.6)

About half the time, I get an error saying, Safari can't open the page "http://www.google.com". The error is: "unknown error" (NSURLErrorDomain: -1)

But then I open the same URL in Chrome, and it loads immediately.

Googled, and don't see a lot about this particular error. But on the first week with the new MBP, it's ridiculously frustrating to have to keep jumping over to Chrome, when I am a Safari user.

Follow Up: I have identified two ways to get past this issue. Not exactly elegant or directly addressing the root cause...but 🤷‍♂️

1. Without closing Safari, turn off/on your WiFi and refresh the page
2. Keep smashing the refresh button (no telling if it's going to work, I've had mixed results with this one)

This is a Major Bug in Safari as part of the MacOS 15.0 release

It should have more attention from Apple

why is this happening .. how to resolve ?

I've had success just waiting for a bit. After a couple of minutes, the same Safari tab that showed that error all of a sudden was able to display the page with nothing else changed or done.