-6023 Parsec Error [work] Jun 2026

If your ISP uses CGNAT (common with mobile broadband, Starlink, or cheap home internet), you cannot receive inbound connections. Solutions:

This error message originated from the old Infocom text adventure games, specifically from the Z-code interpreter. When a player would try to move in a direction that wasn't possible or wasn't implemented in the game, the interpreter would display a cryptic error message: "-6023 parsec error". -6023 parsec error