j5 produces a few log files that record the activity of the j5 Applications and services. These log files are stored in C:\ProgramData\j5\log.
The j5 Installer and j5 Setup Wizard log events are stored in the C:\ProgramData\j5\log\setup folder.
The j5 Application Server and j5 Reporting Service log events are stored in the C:\ProgramData\j5\log\application folder.
The process identifiers of the j5 services are written to .pid files in the C:\ProgramData\j5\pid folder.