The recovery server could not be contacted.

I had to reinstall a mac, booted to “internet Recovery” and wiped my harddisk.

When I tried to install MacOS High Sierra – I got the error:

“The recovery server could not be contacted.”

This is not because Apple’s servers are busy but because the date on the mac is wrong.

1)

Quit the installer

2)

start Terminal

set the correct date via the “date” command

in the format:

MMddHHmmYE

e.g.

date 0401123018

which is : 17/4-18 time 12:30

3)

restart the installer