If Rumba+ has been previously installed on the client workstation, Web-to-Host stores user data files in the same location. If not, these locations are read from the Windows registry.
Roaming path:
C:\Users\<user_name>\AppData\Roaming\Micro Focus\Rumba
Local path:
C:\Users\<user_name>\AppData\Local\Micro Focus\Rumba
You can use the MSI Packager to modify default user data file locations. For more information on the MSI Packager see the online help supplied with the utility.