"Error Opening Sub-Domain" error message when you open SNA Manager

After you open SNA Manager and you expand the Microsoft SNA Manager folder, you may receive the following error message:
If this message appears, the following event is also posted in the application log of the Event Viewer:

Though there may be more than one reason for this problem to occur, two known causes are:

• The Remote Registry Service is stopped or unavailable.
• The SNA subdomain name is not listed in the registry. This error is seen only if the value is blank.

NOTE: By default, the SNA subdomain name is the Windows NT or Windows 2000 Server name.

Resolving this problem involves these steps:

• Start the Remote Registry Service.
• Verify that the SnaDomain:REG_SZ: <subdomain_name> value is listed in the registry.

To resolve this problem, follow these steps:

1. Start Registry Editor (Regedt32.exe).
2. Locate the SnaDomain value under the following key in the registry:
   HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\SnaBase\Parameters
3. On the Edit menu, click Multi String, type <Subdomain_Name>, and then click OK.
4. Quit Registry Editor.

If SNA Management tracing was turned on during this time, the Expintx.atf trace file shows that after the MngGetLocalDomain call is made, the value name (SNA subdomain name) that comes back is <blank>.
For additional information about Event Id 5149, click the article numbers below to view the articles in the Microsoft Knowledge Base: