I cannot fix this error: "Could not connect to the server.(-1004)"
Greetings, I have a Mac late 2012, 27" iMac on MacOS Sierra Version 10.12.6, when I go into the App Store and try to update software it keeps coming up with error: "Could not connect to the server.(-1004)" I have gone onto YouTube and tried all the advice there but nothing seems to help or stop this "error has occurred" I am not quite sure where else to turn, has anyone experienced a similar problem? I would appreciate any further advice, Kind regards Chris