SYMPTOM:
After completing all the required steps to configure Narrowcast System, an error message thrown in Narrowcast Administrator as follows:
An unexpected error was encouterred while attempting to start the Distribution Manager.
Possible cause are 1) the target machine is unreacheable, 2) you do not have enough permission on the target machine to access the Distribution Manager Proxy, 3) the Strategy Logging Client is not running on the target machine, or 4) the password of the Distribution Manager service or the Distribution Manager Proxy identity account is incorrect or expired.

In addition, following error found when Distribution Manager service is attempted to be started individually.
Windows could not start the Strategy Distribution Manager service on Local Computer.
Error 0x80004005: Unspecified error

DELog has following error message:
Call to start the Configuration Server during the DM NT Service initialization. DM initialization failed
Invalid address: "xxx" Recipeient Id: 2
Problem starting up the DM. [Error : -2147467259]
DM process has shutdown
CAUSE:
While the cause of the issue may be one of 4 reasons mentioned in the error message, the error, in this case, was caused by the fact that the system configuration was done with Fully Qualified Domain name as shown below:

ACTION:
1. Edit System and select "Remove all machine from the Narrowcast Server system."
2. Then, come back to the same step, then, choose "Select and configure a single machine for Narrowcast Server."
3. Specify either a short machine name or IP address, then, complete System configuration.
KB441637