2.8.8 LAN Manager 2.1 Enhanced When you set up Windows for use with LAN Manager 2.1 Enhanced, the following entry is added to the [boot] section of your SYSTEM.INI file: Network.drv=lanman21.drv See the SYSINI.WRI file for more information on this entry. For Windows to support LAN Manager 2.1 Enhanced, you must have the files NETAPI.DLL, PMSPL.DLL, LANMAN21.DRV, LM21_W31.HLP, WINPOPUP.EXE, and WINPOPUP.HLP. These files are usually located in your LAN Manager NETPROG directory, which is on your path. If Windows cannot find any of these files, you may receive warning messages when starting Windows, or be unable to use Windows network functions. .