必要 ひつよう動作 どうさ環境 かんきょうではありませんでした
hitsuyōdōsakankyōdewa arimasendeshita

Noun
Desu Copula

The polite, past negative form of 必要動作環境

1. Was not a necessary operating environment.; Was not required for the operating environment.

Past/Perfective
Negative
Polite
Formal Register
Computing