iMac 27" (2021) cannot connect to internet

iMac 27" (2021) cannot connect to internet even though Network Settings say ethernet and wifi are both connected. Router and wifi are working for other devices in the home. Suggestions?




[Re-Titled by Moderator]

Original Title: iMac

iMac 27″, macOS 15.6

Posted on Nov 28, 2025 9:46 PM

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Question marked as Top-ranking reply

Posted on Nov 28, 2025 10:29 PM

Restart your modem and router (yes I get other devices connect okay) and then restart the iMac. Also do you have ANY of the following types of third party apps installed:


  • Antivirus
  • Cleaning
  • Security
  • VPN
  • Maintenance


Finally, there is NO such thing as a 2021 27" iMac, 27" iMacs ended in 2020! You can learn what you own by click the Apple symbol in the upper left of the display and then selecting About this Mac and among other things it will tell you the model year and size Mac that you have.

1 reply
Question marked as Top-ranking reply

Nov 28, 2025 10:29 PM in response to soccerbrit

Restart your modem and router (yes I get other devices connect okay) and then restart the iMac. Also do you have ANY of the following types of third party apps installed:


  • Antivirus
  • Cleaning
  • Security
  • VPN
  • Maintenance


Finally, there is NO such thing as a 2021 27" iMac, 27" iMacs ended in 2020! You can learn what you own by click the Apple symbol in the upper left of the display and then selecting About this Mac and among other things it will tell you the model year and size Mac that you have.

iMac 27" (2021) cannot connect to internet

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