Question : Error 1923. Service 'SQL Server ()' () could not be installed.

I am attempting to install SQL Server 2005 Express on a 2k3 SBS R2 server. I get the following message in the event log:

Event ID: 11923

Product: Microsoft SQL Server 2005 Express Edition -- Error 1923. Service 'SQL Server ()' () could not be installed. Verify that you have sufficient privileges to install system service.

The installer hangs and doesn't do anything. I have to end task. I let it sit for 48 hours before I forced it to quit.

Answer : Error 1923. Service 'SQL Server ()' () could not be installed.

This event occurs because the service is already installed on the machine. The service/Application has to be uninstalled first.  

this is from:

http://www.eventid.net/display.asp?eventid=11923&eventno=5938&source=MsiInstaller&phase=1

also Maybe you have to create a service account or install account with the proper
rights for sql install.