Solution : https://service.sap.com/sap/support/notes/1511147 (SAP Service marketplace login required)
Key words :
menu tools -> compatibility view settings, uac - user account control hinders, windows vista/windows7 clients, prerequisites ie8 security settings, displaying mixed content data, user account control, compatibility view settings, ie8 security settings, access data sources, ie7/ie8 user
Related Notes :
| 1347768 | Web Dynpro and Microsoft Internet Explorer Version 8.0 |