Activar transacciones distribuidas en SQL Server Express
In Control Panel, open Administrative Tools, and then double-click Component Services.
In the left pane of Console Root, click Component Services, and then expand Computers.
Right-click My Computer, and then click Properties.
On the MSDTC tab, click Security Configuration.
Under Security Settings, select all of the check boxes.
Verify that the DTC Logon Account name is set to NT AUTHORITY\NetworkService.
Lo posteo porque perdí un buen rato hasta que descubrí que este era el problema."