Troubleshooting
This error results from the improper delivery of necessary game files. Please follow the steps below to initiate a small download of the missing content:
- Completely exit Steam.
- Navigate to your Steam installation folder (~C:\Program Files\Steam).
- Delete the 'appcache' folder.
- Restart your computer and attempt to launch the game through Steam.
If the issue persists, it may be that a program on your machine is interfering with the proper delivery of game files.
Please temporarily uninstall any applications listed in our
Programs Which May Interfere with Steam.
Additionally, it is possible that
anti-virus software is reporting game files as malicious.
Unsupported operating systems
Important:
Some titles can be downloaded through Steam on an operating system that they are not currently supported with. Check your game's system requirements on the title's Steam Store page or retail box. This is caused by the game's configuration as chosen by the title's developers. In cases such as this, even if a game can be installed, it will not run and is not supported on alternate operating systems in any way.
Running Steam as an Administrator
For Windows Vista, 7, and 8:
- Completely exit Steam.
- Right-click on the shortcut which you use to launch Steam.
- Select "Run as Administrator."
For Windows XP:
- Exit Steam completely.
- Go to the "Start" menu, select "Run", type "regedit" and click "OK".
- Navigate to the following registry key: HKEY_CURRENT_USER\SOFTWARE\VALVE
- Right click and select "Permissions."
- Check the "Allow" boxes for "Admin" and "System" for both "Full control" and "Read".
Flushing your Steam application files
You can reset the Steam application's files to rule out a few potential causes of this issue.
- Exit Steam.
- Open Internet Explorer, Safari or Firefox and type steam://flushconfig then press Enter. (If asked to allow this website to open a program, please click 'Allow' or 'OK'.)
- When prompted by Steam to reset your configuration, please click 'OK' to confirm.
- Once done, log in to Steam and re-test the issue.