Abstract: A method for installing files required by an application during execution, without requiring the user to invoke a installation procedure if the required file is deleted or missing. Briefly described, the present invention makes possible a method for detecting whether a file required by the application's execution is missing. If the file is missing, the application calls an installer module to install the missing file in the location expected by a shared library Dynamic Link Library (DLL). The application then terminates. In the event a second required file is being used by another application or computer process, the installer module will restart the system following the replacement of the missing file. In the event that a second required file is not being used by another application or computer process, the install module re-executes the application after replacing the missing required file.