Drive mappings apply for a specific Windows user account.
If a Windows account executes a Windows service, the operating system expects the service to know the drive letters of the account used.
However, drives connected using net use are only available to a Windows account in an interactive Windows session.
A logon session is created for the Windows account when a Windows service starts. This is not an interactive session, but a special logon session to execute services. As a result, connected drives are not available in this session.
Content Composer service applications are able to use network drive letters despite this restriction.
If the configuration file for a Content Composer service contains information on drive letter mapping to a network drive, the service is able to create a connection.
If the network drive is not accessible, the service does not start. Check the log file and the event log for any information on this action.
When a service stops, the connection to the network drive closes.