How to start MSDTC (Fix MSDTC not available error)

you can set it here:
START > SETTINGS > CONTROL PANEL > ADMINISTRATIVE TOOLS > SERVICES. Find the service called 'Distributed Transaction Coordinator' and RIGHT CLICK (on it and select) > Start.

or create a .dat file with this line of command:
net start msdtc
and run it

or
Administrative tools > Component services>component services > my computer > distributed transaction Coordinator > Local DTC > right click , propertires, security tab > Security settings > check the transaction manager communication.