Thank Yzöwl, I found out my issue is actually powershell interfereing with the command. Command that works in powershell is: control.exe "cscui.dll,,1"
Ok, it is a simple task but can't figure it. In my script I have to open the "Manage Offline Files" in "Sync Center" of control panel. Easy. (both work) ---> control.exe /name Microsoft.OfflineFiles or control.exe cscui.dll Hard is selecting the second tab. The tab is called "Disk Usage" any suggestions?