Incognito Mode disabled (recreation)

(NOTICE: this is a recreation of a question I already asked, but was mistaken for a duplicate)

My Google Chrome Incognito Mode is disabled, and I want to know how to re-enable it. And, for god's sake, why was the old one classed as a duplicate of that one asking why Incognito Mode was disabled? "Why is Incognito Mode disabled?" is NOT the same as "How do I re-enable Incognito Mode?" I know why it is disabled, I want to re-enable it!