JSI Tip 7438. When you use Cluster Administrator (Cluadmin.exe) to connect to a cluster, you receive 'Error 1721 Not enough resources are available to complete this operation'?

If you run Cluadmin.exe with any parameter other than ., you receive the subject error.

This behavior will occur if the range of available IP ports that Cluadmin.exe can use to initiate communication through RPCs is not greater than 100.

NOTE: Some programs, including MSMQ, limit the port range when they are installed.

To workaround this behavior:

1. Use the Registry Editor to navigate to HKEY_LOCAL_MACHINE\ SOFTWARE\Microsoft\RPC.

2. Double-click the Ports Value Name, a REG_MULTI_SZ data type, and set the range greater than 100.

NOTE: If the problem persists,increase the range, or add a second line with an additional 100+ ports, using port numbers in the dynamic range (1025 - 65000).

NOTE: Other Windows Services consume ports in the dynamic range. Among these are DNS, WINS, and SQL Server.