Crossword clues for the word: FATALERROR The word FATALERROR has appeared as an answer to at least 8 crossword clues on different crossword puzzles. Crossword clues for FATALERROR Showing 1 to 8 of 8 results Clue(s) A bug may cause it A virus may cause one Cause for a reboot, often Cause of a crash Mistake with major consequences Program crasher Serious software problem Very costly mistake (see letters 4 to 6)