鯖さば落おち

noun, noun or participle which takes 'suru', intransitive verb

server outage; server down

Internet slang for when a game server or online service becomes unavailable. Often used as a suru-verb (鯖落ちする).

• さっきまで遊あそんでたのに、急きゅうに鯖さば落おちした。

  I was playing until just now, but the server suddenly went down.