Updated: 2 months ago
Article ID: 28441
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Common Problems

Failed to launch a critical file. Please close all other applications, temporarily deactivate your anti-virus software, and try again. Alternatively, log in as an administrator and try again.

The Blizzard Agent could not find or launch the game's executable file. This happens when game files have been moved by security programs, corrupted during an update, or have incorrect permissions settings.


The steps below will re-create any missing files. When you have completed these steps, try launching the game again to see if the error appears. If the error returns, follow the steps under Advanced Troubleshooting.

  1. Update or temporarily uninstall any security programs, which may mistakenly identify the login module as a security threat.
  2. Deleting the cache folder can resolve problems with the logon module.
  3. Setting a game to always run as administrator may cause launching errors. Right-click the game, select Properties > Compatibility, and uncheck Run this program as an administrator.
Advanced Troubleshooting
  1. Close all other applications to resolve software conflicts and free up resources.
  2. Run the repair tool to repair any damaged game files.
  3. Try creating a new administrator account to resolve permissions issues.
  4. If the problem persists, uninstall and reinstall the game.


  1. Blizzard games do not support Mac OS X 10.9.5 or lower and you will receive this error while playing on an unsupported version. Upgrade to the latest version of Mac OS X, which is available for free from Apple.
  2. Make sure your game client and files are in the right game folder by checking each of the folders listed below for the items in the Game Files column.
    GameInstall LocationGame Files
    World of Warcraft/Applications/World of WarcraftWorld of
    StarCraft II/Applications/StarCraft IIStarCraft
    Diablo III/Applications/Diablo IIIDiablo
    Heroes of the Storm/Applications/Heroes of the StormHeroes of the
    If any of the game files are missing, locate them by searching your computer and then return them to the proper folder.
Advanced Troubleshooting
  1. Reset Folder and File Permissions to make sure there is no conflict between the latest OS update and your permissions.
  2. Close all other applications to resolve software conflicts and free up resources.
  3. If the problem persists, uninstall and reinstall the game.

Note: Overwatch does not support 32-bit operating systems. Make sure you are using a 64-bit operating system.

Tried everything here?

If the steps above did not resolve your problem, visit our Technical Support forum or contact us.