The FRM-18105 error is caused by a missing, damaged, or improperly mapped FORMS_BUILDER_CLASSPATH variable in the Windows Registry or system environment variables. When Oracle Forms Builder attempts to load its built-in Java-based help documentation or UI components, it encounters a configuration mismatch or incorrect path and fails immediately.
Most occurrences of FRM-18105 happen because the Windows Registry path is missing or points to a legacy directory. frm-18105 failed to start the help system
Here’s a helpful troubleshooting guide to resolve it: The FRM-18105 error is caused by a missing,
Oracle Forms looks for help files relative to your installation directory. Verify that all necessary help files and directories
FRM-18105: Failed to start the Help System typically indicates that
than the current Forms Home, causing the Builder to load incompatible libraries. Missing Environment Variables FORMS_BUILDER_CLASSPATH