From E812 and subsequent versions the operating mode or application control, the majority of Applications or Interactive process can only run in the WEB.
In The table JDEOL812 / F9860, field SIANSIF defines where the application can be run, W for Web, C for Client (Windows) or B for Both.
If you want FAT CLIENT in for the app execution, you can modify this field.
The following is a DEMO E9 sql update for F9860 examples: (NB: please do not execute this statement Unless you are very sure about the application name)
UPDATE JDEOL900.F9860 SET SIANSIF = ‘B’ WHERE SIOBNM LIKE ‘P%’ AND SIANSIF = ‘W’ ;
This way you can run the Interactive applications on Fat client.