30 April, 2007

Transactions and DTC hell!

Today I fought a real battle with the DTC and System.Transactions (distributed transactions).
Turning off the firewall of-course allows the stuff to work without problems; it is however not a desired solution.
I initially was under the impression that allowing port 135 in the Windows Firewall was sufficient; this is however not the case. Allow the  %windir%\System32\msdtc.exeto go through the firewall by means of the Firewall UI or via this command: 
“netsh firewall set allowedprogram %windir%\system32\msdtc.exe MSDTC enable”.
A great post on the subject is found here:
http://blogs.msdn.com/florinlazar/archive/2004/06/18/159127.asp

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