Start Menu > Run > gpedit.msc > User Configuration > Administrative Templates > Windows Components > Attachment Manager >
In the right pane, double click on 'Inclusion list for moderate risk file...
Type: Posts; User: servicecat
Start Menu > Run > gpedit.msc > User Configuration > Administrative Templates > Windows Components > Attachment Manager >
In the right pane, double click on 'Inclusion list for moderate risk file...