MonitorWare Knowledge Base

RESOLUTION

WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.

If you do not have to specify which ports MSDTC uses, you can resolve this problem by deleting the following registry key:

HKEY_LOCAL_MACHINE\Software\Microsoft\Rpc\Internet

1. Click Start, click Run, type regedt32 in the Open box, and then click OK. This starts Registry Editor.

2. In Registry Editor, expand HKEY_LOCAL_MACHINE.

3. Under HKEY_LOCAL_MACHINE, double-click Software, double-click Microsoft, and then double-click Rpc.

4. Under RPC, select Internet.

5. On the Edit menu, click Delete to delete the key.

6. On the File menu, click Exit to close Registry Editor.

7. Click Start, and then click Shut Down. Select Restart in the list, and then click OK to restart the computer.
If you must control which ports MSDTC dynamically allocates for incoming communication, you must increase the number of ports that are specified under that registry key:

1. Click Start, click Run, type regedt32 in the Open box, and then click OK. This starts Registry Editor.

2. In Registry Editor, expand HKEY_LOCAL_MACHINE.

3. Under HKEY_LOCAL_MACHINE, double-click Software, double-click Microsoft, and then double-click Rpc.

4. Under RPC, select Internet.

5. In the right pane, double-click Ports.

6. In the Multi-String Editor dialog box, increase the range of specified ports. For example, if the current range is from 10000-15000, which allocates 5,000 ports, you can change the range to 10000-20000 to allocate 10,000 ports.For additional information, click the article number below to view the article in the Microsoft Knowledge Base:
250367 INFO: Configuring Microsoft Distributed Transaction Coordinator (DTC) to Work Through a Firewall

7. On the File menu, click Exit to close Registry Editor.

8. Click Start, and then click Shut Down. Select Restart in the list, and then click OK to restart the computer.