Certain common sites no longer load on Safari

Safari can’t open a website.    

 Safari – slow page loads.       

 Safari - Unsupported third-party add-ons may cause Safari to unexpectedly quit or have performance issues.   

Safari doesn't load a page or webpage items are missing.    

Web Content not responding

Are you running any anti - virus programs? Using a VPN?

Try setting up another admin user account in System Preferences/Users & Groups to see if the same problem continues. Please post back on whether or not this worked. Also try the Safe Mode. Please post back on whether or not this worked.

Isolating an issue by using another user account    

Safe Mode - About.       

If it works in the Safe Mode, try running this program when booted normally and then copy and paste the output in a reply. The program was created by Etresoft, a frequent contributor.  Please use copy and paste as screen shots can be hard to read. Click “Share Report” button in the toolbar, select “Copy to Clipboard” and then paste into a reply. This will show what is running on your computer. No personal information is shown. If the log won’t post, try posting it in Pastebin and provide a link in a reply. After pasting the report in a PasteBin page, go to the top of the page, and copy the address in the URL bar. Paste that in a new reply.        Pastebin.    

Etrecheck – System Information.      

Web site version if required.  https://etrecheck.com

If it is the same in another user account, do a backup, preferable 2 separate ones on 2 drives. Boot to the Recovery Volume (command - R on a restart). Run Disk Utility and select First Aid. Then re-install the OS.

Reinstall from macOS Recovery.    

OS X Recovery.    

I have had the same issue, feels like for a few weeks now. Wash Post is the most easily replicable for me. Cariuma shoes is another. I also find I cannot access Safari preferences, I just get a pinwheel.

The problem does not resolve when I restart the browser, but it does temporarily resolve when I restart the machine. But, it usually returns within a day. (That, of course, means that any time I try a solution that includes a restart I am not immediately able to tell if it's working because of the solution or the restart.)

I've called tech support this week, here are the things they've tried that have failed so far:

--Clearing history

--Clearing caches

--Resetting SMC

--Creating a temp administrator account and trying Safari there (same issue present)

--Deactivating all Safari extensions

--Reinstalling MacOS (not a clean install, but the reinstall from system recovery)

I'm running Safari 13.1.1 on a 2020 Macbook Air, running Catalina 10.15.5

I have the same issue, but with Amazon Prime and ebay as well, and other sites. I also have many instances where the page loads fully, but when I click on any part of any page, nothing loads. my temps also rises on my iMac, and multiple cores seem to be loading up. activity monitor spike to up to 97 percent cpu used as well. It has ONLY started since upgrading to Catalina. I keep all updates going on this iMac. I have run Etre Check Pro, and at times it shows as an issue, other times not. I have booted into safe mode as well. I go into my other iMac running Mojave, and also onto my MacBookPro, running Mojave as well. NO ISSUES. This is a Catalina Safari issue.

I'd posted above about the VPN resolving the problem, but that must have just been a coincidence, because I could not replicate.

I've since done a clean install, then reinstalled software. A day later the issue returned. Now done another clean install, will not reinstall any software, and will see if the problem returns.

Out of curiosity, what network hardware are people using? I have a Netgear Orbi system.

I use ethernet, 250 Mb per second, all iMacs are ethernet ported throughout 4 rooms. My WiFi in home is fine as well, faster than Sprint LTE in my area. I use my Spectrum Router ported Via Ethernet to rear of home to my AirPort Extreme, and it works fine. I'm guessing some of the issue may be high web traffic on some sites, but the issue is only on Catalina, not on my other Os's, and not on my Cyberpower Gaming PC Running Windows.

Okay, so it doesn't sound like some esoteric hardware issue. And the sites on which I run into it are not all high-traffic sites: the Wash Post is the most common one, but also a shoe vendor website (Cariuma) and an English-language German news site (thelocal dot de).

In another forum I saw someone mention having 1Password installed, which I also have. Anyone else using that? I don't think it's a factor, though, since I saw the problem return after a clean install where I didn't re-install any software.

Late July update: the problem seems to have stopped since the last MacOS update to 10.15.6 / Safari 13.1.2

My problem returned this afternoon. I then turned on my VPN, and was able to browse fine. I turned off my VPN and the browsing issues returned.

You are welcome.

Just as a continuing follow-up: I reinstalled my OS and then did nothing else, installed no third-party software, just spent the day using Safari in the reinstalled OS. Problem returned within hours.