iMAC (mid 2017) with Ventura won’t connect to the internet via Ethernet.

Question

iMAC (mid 2017) with Ventura won’t connect to the internet via Ethernet.

I upgraded my parents iMAC a1418 (21.5” 4K) mid-2017 to a 1TB SSD and 32 GB RAM. Installation went smoothly. I installed the latest version of macOS Ventura. However, my only issues is the computer is not connection to the internet via Ethernet. iMAC works with WiFi without issue.

Under network settings the ethernet shows the red circle and "not connected".

What I’ve tried:

Cleaned Ethernet jack with IPA.
Ethernet cable works on a windows PC and my Mac laptop. So my cable and router work.
Tried connecting it to my job’s Ethernet cable with no success.
There’s no firewall.

Any suggestions?

Posted on Feb 25, 2025 6:25 AM

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Answer 1

Feb 25, 2025 8:54 AM in response to justinloos1985

justinloos1985 wrote:

Yes, I’m sure. The Ethernet cable is connected to my windows PC providing internet. I unplug the Ethernet from the windows PC and plug it into the Ethernet jack on the iMAC. No internet connection.

Power cycle your router and Ethernet connected Mac.

Maybe using a liquid to clean the Ethernet port caused damage.

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Answer 2

Feb 25, 2025 8:10 AM in response to justinloos1985

Are you sure you are connecting to the correct port on your router?

Try connecting to the same port that works for another computer. Does it work?

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Answer 3

Feb 25, 2025 8:48 AM in response to Luis Sequeira1

Yes, I’m sure. The Ethernet cable is connected to my windows PC providing internet. I unplug the Ethernet from the windows PC and plug it into the Ethernet jack on the iMAC. No internet connection.

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Answer 4

Feb 25, 2025 9:04 AM in response to BobTheFisherman

cleaning the port with 99% isopropyl alcohol would not damage the connection.

I tried power cycling but lead to no success.

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iMAC (mid 2017) with Ventura won’t connect to the internet via Ethernet.

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