Siebel Installation Guide for Microsoft Windows: Servers, Mobile Web Clients, Tools > Preparing for Installation > Planning the Siebel Directory Structure >

Setting TEMP and TMP Environment Variables

On some systems the operating system incorrectly returns a long path name when a short path name is requested. This long path name can cause the installation to fail. As a precaution, set your TEMP and TMP environment variables to point to a directory that does not contain spaces. Alternatively, you can run the installer and specify which temporary directory the installer should use, for example:

Setup -is:tempdir tempdir

NOTE:  Validate TEMP and TMP environment variables are set to an existing path.