Mojave update problem

[tmcnulty1381]

Finally decided to go to Mojave today. Download ok to 2018 iMAC 27. On boot no network, (WiFi, Ethernet),
Bluetooth flakey (had to connect each device), and no USB. Plus slow as mud to log in,
Do anything.

Called Apple Support, described problems, got into phone and video session.
Moved one file /etc/sysctl.conf to another name. Restart and magic all worked.
Apple Support knocked it out of the Park....

 

[sury suryanarayanan]

Over the last month, I have not been able to connect to internet via ethernet cable. WIFI works fine. I have Mojave 10.14.3 . I never had this problem before. Did any new security update cause this problem? How to solve this? Can someone help please?

 

[reZZZZZ7]

Over the last month, I have not been able to connect to internet via ethernet cable. WIFI works fine. I have Mojave 10.14.3 . I never had this problem before. Did any new security update cause this problem? How to solve this? Can someone help please?

Have you resolved it as I had the same issue

 

[sury suryanarayanan]

Yes.Fortunately the problem was not with my Mac. It was found to be external; in the ethernet system.