Tips: connecting to the server as administrator on LAN
If you failed to connect to the database file on the server computer by following the user guide, please fix it by following the steps below. First, please access to Control Panel>System and Security>Administrative Tools
And then access to Services
Find both of them(Firebird Guardian and Firebird Server) and right click them and select Property, and then set the Startup Type as Automatic
Second, please access to Windows Task Manager>Services
And find out the two like below and right click them and select Start Service