MSDTC on server 'servername' is unavailable

This error occurs when the “Distributed Transaction Coordinator” service is not running. To start a distributed transactions with TransactionScope object, the windows service “Distributed Transaction Coordinator” should be running.

To fix the problem just start the service “Distributed Transaction Coordinator” using Windows Service manager.

Here are the detailed steps for starting the service

1. Click on Ctrl+R then type services.msc in run command then click OK,Service Manager will display.
2. Scroll through the list and identify the service “Distributed Transaction Coordinator”
3. Right on the service and choose “Start”