what is meant by fatal error in a an application?
You are unable to deploy a software and you get an error - Fatal error during installation process. Cause You will encounter this error due to one or more of the following reasons: 1  Prior existence of the software. 2  User name mentioned in the 'Run As' option under Define Configuration does not have the privilege to install the software. 3  Generic machine-specific issues: Not enough disk space for installation. The temp directory is not clean.