"Failed to read a required file" on patch

  • Since 1.04 came out I have been getting the following message while trying to download the patch:

    "Failed to read a required file. Please close all other applications, temporarily deactivate your anti-virus, and try again"

    I have done so several times but it still will not download the patch.
  • ShivanWurm,

    Try deleting the C:\ProgramData\Battle.net folder first. That contains Agent, Launcher, and Setup info which will be reacquired when the game is run again.

    Run the launcher as an admin as well if you haven't yet.