Solution : https://service.sap.com/sap/support/notes/1534088 (SAP Service marketplace login required)
Key words :
selecting tools->internet options->languages, symptom language selected, language selection box, browser language settings, cup applications follow, browser default language, browser language setting, miscellaneous language setting, browser language, default language
Related Notes :
1168508 | Compliant User Provisioning 5.3 Support Package (VIRAE) |
1142989 | Default System Language Setting for CUP or ERM |