How do I enable MSDTC on SQL Server?

Is this even a valid question? I have a .NET Windows app that is using MSTDC and it is throwing an exception:

System.Transactions.TransactionManagerCommunicationException: Network access for Distributed Transaction Manager (MSDTC) has been disabled. Please enable DTC for network access in the security configuration for MSDTC using the Component Services Administrative tool ---> System.Runtime.InteropServices.COMException (0x8004D024): The transaction manager has disabled its support for remote/network transactions. (Exception from HRESULT: 0x8004D024) at System.Transactions.Oletx.IDtcProxyShimFactory.ReceiveTransaction(UInt32 propgationTokenSize, Byte[] propgationToken, IntPtr managedIdentifier, Guid& transactionIdentifier, OletxTransactionIsolationLevel& isolationLevel, ITransactionShim& transactionShim)....

I followed the Kbalertz guide to enable MSDTC on the PC on which the app is installed, but the error still occurs.

I was wondering if this was a database issue? If so, how can I resolve it?

Use this for windows Server 2008 r2 and Windows Server 2012 R2

1. Click Start, click Run, type dcomcnfg and then click OK to open Component Services.

2. In the console tree, click to expand Component Services, click to expand Computers, click to expand My Computer, click to expand Distributed Transaction Coordinator and then click Local DTC.

3. Right click Local DTC and click Properties to display the Local DTC Properties dialog box.

4. Click the Security tab.

5. Check mark "Network DTC Access" checkbox.

6. Finally check mark "Allow Inbound" and "Allow Outbound" checkboxes.

7. Click Apply, OK.

8. A message will pop up about restarting the service.

9. Click OK and That's all.

Reference : https://msdn.microsoft.com/en-us/library/dd327979.aspx

Note: Sometimes the network firewall on the Local Computer or the Server could interrupt your connection so make sure you create rules to "Allow Inbound" and "Allow Outbound" connection for C:\Windows\System32\msdtc.exe

Do you even need MSDTC? The escalation you're experiencing is often caused by creating multiple connections within a single TransactionScope.

If you do need it then you need to enable it as outlined in the error message. On XP:

• Go to Administrative Tools -> Component Services
• Expand Component Services -> Computers ->
• Right-click -> Properties -> MSDTC tab
• Hit the Security Configuration button