ERR_INTERNET_DISCONNECTED for almost of the pages

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Level 1

20 points

ERR_INTERNET_DISCONNECTED for almost of the pages

There is a very strange issue with a Mac. Even though it successfully connects to the Wi-Fi, it can only access two websites: google.com and youtube.com. Initially, the second website (YouTube.com) didn't load, but after approximately 10 attempts, it started working.

For all other websites, the browser immediately displays an "No internet" error page with the message: ERR_INTERNET_DISCONNECTED.

It is important to note that the browser's response is instantaneous, indicating that the web browser recognizes the lack of an internet connection.

Here are some key points about this issue:

- This problem occurs with three different tested Wi-Fi networks.

- It affects all user accounts on the Mac.

- It occurs with all web browsers, including Firefox, Chrome, and Safari (though Safari is not typically used).

- Private browsing experiences the same problem!

- PWA websites/apps are starting but cannot access the internet

- When using the "ping" command from the terminal, packets are received from all websites. This suggests that the network appears to be functioning correctly. For example, running "ping netflix.com" returns packets, while the browser immediately displays the ERR_INTERNET_DISCONNECTED error.

- The Activity Monitor shows that services are actively interacting with the network.

- Some desktop applications have internet access, while others do not.

- We have attempted to clean the DNS using the command: "sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder" without any luck.

- NordVPN was there in this Mac, although it wasn't used from the main account, I removed it trying to fix this error, but eventually, it had no difference.

- Mac Diagnostics has found no errors.

- When running Safari through the Mac Diagnostics, all webpages load as expected!!!

Posted on Oct 25, 2023 1:03 AM

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Answer 1

Top-ranking reply

dennisat Author

Level 1

20 points

Oct 25, 2023 9:38 AM in response to John Galt

I reinstalled Sonoma, but it didn't fix the problem.

Then Kaspersky said it had an update! I didn't think of that in advance, this is also touching the network layer like the NordVPN.

Kaspersky is a super light antivirus, so you almost forget you have it. I updated Kaspersky, which also reinstalled it's app, and the problem was fixed!

In the end, it was a problem with Kaspersky. The upgrade to Sonoma went smoothly, but this issue popped up a week later.

I still recommend Kaspersky. It's very powerful and much lighter than McAfee and Norton, which eat up CPU like they're mining Bitcoins for no reason, even if you have no files on your disk.

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Answer 2

John Galt

Level 10

155,258 points

Oct 25, 2023 3:31 AM in response to dennisat

You already performed an extensive amount of troubleshooting. Also, determine if the same problems occur in "Safe Mode": Use safe mode on your Mac - Apple Support.

Did you try reinstalling macOS? It doesn't usually help but updating macOS is recommended in If Safari doesn't open a page or work as expected on your Mac - Apple Support. Review all those suggestions, which may include others you haven't tried such as setting up a new network location.

Let us know what you find out.

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Answer 3

dennisat Author

Level 1

20 points

Oct 25, 2023 7:47 AM in response to John Galt

Thanks for your reply.

In safe mode, all pages are loaded as expected. Turning to normal mode, I still have the same problem.

It looks like something is stuck in the configuration of the network layer or something like that.

I'll try reinstallation.

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