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Question: Safari won’t connect to some websites

iMac running Sierra 10.12.6.

A lot of websites I try to connect to return errors. Sometimes the entire site is unavailable, sometimes just a page or a file.

For example…

User uploaded file


User uploaded file


(Page loads, but all links return this error.)

This doesn't happen everywhere. This page loads fine, as do many other sites. But there seem to be a lot of random sites that just refuse to load. This also happens in Chrome. The sites load fine on an iPad using the same network.

iMac, macOS Sierra (10.12.6), 16 GB

Posted on

Question marked as Apple Recommended

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Nov 12, 2017 6:22 AM in response to Scott F In response to Scott F

Go step by step and test.

1. Restart the Mac couple of times.

2. Startup in Safe Mode. https://support.apple.com/en-us/HT201262

Once in Safe Mode, hard click the “Restart” button at the bottom to restart normally.

3. Reset PRAM. https://support.apple.com/en-us/HT204063

4. Deselect Proxies,if selected.

System Preference > Network > Advanced > Proxies Tab

Unlock the lock if you have to.

Under "Select Protocol", uncheck any box if check marked.

Click "OK" then "Apply”.

5.Backup and Reinstall macOS


Nov 12, 2017 6:22 AM

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Question: Safari won’t connect to some websites