noun
system failure; system error; system outage
Refers to a malfunction, crash, or unavailability of a computer system, network, or service. Common in IT and business contexts.
銀行のシステム障害で、ATMが使えなくなった。
Due to a bank system failure, the ATMs became unusable.
システム障害の原因を調査中
We are investigating the cause of the system error.