According to this HP document regarding print driver support on Windows 8/8.1
the recommended solution for the LaserJet 2100 is the Windows Update mechanism (as described in my earlier post), not the UPD.
According to this HP document regarding print driver support on Windows 8/8.1
the recommended solution for the LaserJet 2100 is the Windows Update mechanism (as described in my earlier post), not the UPD.