Mojave Internet Connection Issue

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Level 1

15 points

Mojave Internet Connection Issue

Just updated from High Sierra to Mojave on my Mac Mini (Late 2012). To do that of course, I was connected to the internet via my normal wifi. However, as of after the update, it is still connected to the wifi but claims that there is no internet. This, of course, is confusing as other devices (my MacBook Air running High Sierra, my iPhone iOS12.0, and others' computers both apple and other in the home) are browsing without issue.

It does not show the wifi symbol with the exclamation mark ( ! ) in it either, as it would if the internet truly was not available.

I have never in the past had this issue occur when updating between MacOS. All settings appear to be identical to before the update. I am not running any programs that are not Apple-approved from the app store or that would have access to override my system settings.

I have attempted:

browsing in Safari/Chrome/Firefox
disconnecting/reconnecting wifi on my mac, as normal
removing the wifi from the auto-join list before disconnecting/reconnecting
'forgetting' the wifi network, then disconnecting/reconnecting with the password requirement
turning on/off the wifi router
restarting my mac & repeating the same above attempts

Mac mini, macOS Mojave (10.14)

Posted on Oct 8, 2018 9:31 AM

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Answer 1

Oct 10, 2018 8:23 AM in response to Kriptess

Kriptess wrote:

Is there any other avenue you would suggest I look into?

(... thinking ...)

In System Preferences->Network, select Wifi, click on Advanced...

We already looked at DNS, and it seems ok (and, furthermore, it is not connecting even if typing the numeric IP, in which case DNS is not involved).

Now let's look at Proxies. Usually all the opens are to be unchecked.

If you have a box checked, try unchecking and see how things work (or not).

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Answer 2

Oct 8, 2018 12:33 PM in response to Kriptess

So it probably is not DNS, after all.

As a last test on this avenue of enquiry, you can try opening a page by IP address in Safari, for example:

http://17.178.96.59

it should open apple.com

[if in doubt you can get this or another IP in Terminal from your MacBook Air, by typing

nslookup apple.com

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Answer 3

Oct 10, 2018 9:35 AM in response to Kriptess

You could download Etrecheck using your other mac and copy it over with a thumb drive; or... maybe, even if internet access is not working, it is possible the AirDrop or file sharing works between your macs.

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Answer 4

Oct 10, 2018 9:16 AM in response to Kriptess

Your tests indicate that something that you have installed is interfering with internet access.

In order to try and find out what it may be, please run Etrecheck and post its report here.

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Answer 5

Oct 8, 2018 10:05 AM in response to Kriptess

Go to System Preferences->Network.

First, what color is the dot next to it: green, yellow or red? (l’m guessing yellow)

Select Wifi on the left. What does it say on the right?

Is it connected to the wifi network you expect? Is the IP one started by 10, by 192 (good)? Or 169 (bad)? Or something else?

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Answer 6

Kriptess Author

Level 1

15 points

Oct 10, 2018 9:12 AM in response to Luis Sequeira1

No proxies checked off.

I looked through the other tabs, and they are all on the automatic / default setting.

A friend suggested I try opening in Safe Mode to see if there would be any difference. Nothing changed, so I deleted the Wi-Fi from the Network window list, made a Wi-fi connection and it worked (connected to Apple & Google)!

But... unfortunately when I restarted in the normal mode, it did not work anymore. I did the same thing as I did in Safe Mode and still no internet despite Wi-Fi connecting.

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Answer 7

Kriptess Author

Level 1

15 points

Oct 8, 2018 10:17 AM in response to Luis Sequeira1

Wifi dot colour is green
Status: Connected (This is the same as before the update, to the same wifi)
IP address begins with 192 (I think this is what you are meaning? Please explain further if not)

Wifi is connected the same as all other devices, just no internet is being recieved to this one computer.

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Answer 8

Kriptess Author

Level 1

15 points

Oct 8, 2018 10:46 AM in response to Luis Sequeira1

At the moment, both fields on that window have the greyed-out sample addresses. I checked and this is how it is set-up on my working MacBook Air, running High Sierra, as well.

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Answer 9

Kriptess Author

Level 1

15 points

Oct 8, 2018 12:43 PM in response to Luis Sequeira1

Attempted and unfortunately, I am unable to open apple.com by IP address.

This is truly a mystery to me

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Answer 10

Oct 8, 2018 1:07 PM in response to Kriptess

This further confirms that the problem is not DNS.

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Answer 11

Kriptess Author

Level 1

15 points

Oct 10, 2018 7:10 AM in response to Luis Sequeira1

Is there any other avenue you would suggest I look into?

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Answer 12

Kriptess Author

Level 1

15 points

Oct 10, 2018 9:28 AM in response to Luis Sequeira1

I went into Safe Mode again to download Etrecheck for your test, however, the internet is not working again in this mode and repeating my previous steps is not helping this time.

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Answer 13

Oct 8, 2018 10:36 AM in response to Kriptess

It all looks ok, so the problem is probably with DNS.

Click the Advanced... button, then click DNS. What do you see there?

It may be empty, or with a greyed address, which means it will use your router as the DNS server; or it may have a specific address. If it shows something that you don't recognize, make a note of it, just in case, and delete it. Try again. You may also try adding one of the google free DNS servers, like 8.8.8.8

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Mojave Internet Connection Issue

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