MS DTC errors on SQL Server 2008 R2 but not SQL Server 2000 running on difference instance
We have run into issues when servers were re-named and we had to set the DTC security properties to "No Authentication Required" on all servers involved in the transaction. This is not a best practice but works for internal network only servers. Directions to the DTC security settings can be found here: https://technet.microsoft.com/en-us/library/cc731495.aspx