Chrome doesn’t handle custom protocols correctly

This can be adjusted in Chrome's Local State file.

The exact location depends on your OS. For example:

• %LOCALAPPDATA%\Google\Chrome\User Data\Local State on Windows 7.
• ~/Library/Application Support/Google/Chrome/Local State on Mac OS X 10.8.
• ~/.config/google-chrome/Local State on Ubuntu 12.04.

Steps:

1. Close Google Chrome.

2. Open the Local State file and search for excluded_schemes in protocol_handler.

3. Add the line

   "steam": false,
   

   to excluded_schemes.

4. Restart Google Chrome.