Microsoft Update KB4056894 Causes Blue Screen Stop Error "0x000000C4" Jan 08, 2018 Filed under: blue screen, microsoft, windows update Share Tweet Pin it Fancy Add Remove the update. It is easiest to restart the computer, hit f8 to get into the recovery options, then Repair Your Computer. Go into command prompt. It is easiest for Option 1. (Shown here as disk d) Option 1: Step... Read more...