0x80070020: a locked file stops Windows Update replacing system files
0x80070020 is a sharing violation during install, usually antivirus or backup software holding files. Clean boot, then rerun the update to clear it.
Excel 0x8007000E Out of Memory: Workbook Hangs or Stops Responding on Large Files
Excel 0x8007000E and Event ID 1002 hangs mean memory or resources ran out. Trim volatile formulas, cut used range and move to 64-bit Excel.