It's the latest 4.9.26 version on a Windows XP Pro PC. I am a Local Administrator on my PC. I'm trying to do a server and client install....
It starts doing the installation and then the error message that pops up is.
Error 1001: The installation failed, and the rollback has been performed. --> An exception occurred in the OnAfterInstall event handler of System.ServiceProcess.ServiceInstaller. --> Cannot open log for source 'Error in SetServiceParameters, err.'. You may not have wrote access. --> The interface is unknown.