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.
Error Codes: BLZAPPAGT02115, BLZBNTAGT00000843

The Battle.net Update 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.

Windows

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. Security software may interfere with the game and prevent it from starting properly. Disable or temporarily uninstall any security programs.
  2. Deleting the Battle.net cache folder may resolve issues caused by outdated files.
  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. Programs running in the background can conflict with the game. Try closing background applications.
  2. Re-create missing executable files by using the Scan and Repair option.
  3. Create a new administrator account and try again.
  4. If the steps above do not resolve the issue, uninstall and reinstall the game using the Battle.net Desktop application.

Mac

  1. Blizzard games do not support Mac OS X 10.6. Mac OS X 10.6 users who try to launch these games will receive this error. Upgrade to the latest version of Mac OS X to resume gameplay, 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.
    Game Install Location Game Files
    World of Warcraft /Applications/World of Warcraft World of Warcraft.app
    StarCraft II /Applications/StarCraft II StarCraft II.app
    Diablo III /Applications/Diablo III Diablo III.app
    Hearthstone /Applications/Hearthstone Hearthstone.app
    Heroes of the Storm /Applications/Heroes of the Storm Heroes of the Storm.app
    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 & File Permissions to resolve any invalid permission rights.
  2. Close any unnecessary background applications to avoid program conflicts.
  3. If the steps above do not resolve the issue, uninstall and reinstall the game using the Battle.net Desktop application.

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

Tried everything here?

If you have tried all of the steps for your operating system and still require assistance, please visit our Battle.net Technical Support Forums or contact us.