Hello all.

Bit of a daft one, this. I can't stop my Mac Mini (10.13.6, 2.8 Core i5), from closing down. Done all the obvious things (I think), i.e. what I can from System Prefs., but still if I leave it an hour or more, it switches off.

My workround is to leave an unsaved Quark page on screen, which then prevents the switch-off. But if I forget to set this up, it switches off.

What am I missing, any clues?