LicenseWatch FAQ
What SQL Server Instances are installed on a Machine?
SQL Server instances are registered in the registry. Look under HKEY_LOCAL_MACHINE\Software\Microsoft\Microsoft SQL Server. The value InstalledInstances will contain a list of SQL Servere instances, i.e.:

MSSQLSERVER is a default instances that has the name of the server. A name such as LICENSEWATCHMSDE refers to a named instance tat can be accessed like this: [server]\LICENSEWATCHMSDE.
