Connect your interface to the car's OBD port and turn the ignition on. Launch the software. You should see the "Vehicle identification" screen without any "Communication error."
Do not update an old working version. Once you have PP2000 v22 or Lexia v47 running stably on an old laptop, image the hard drive . You will thank yourself later. PP2000 - LEXIA OLD versions - MHH AUTO - Page 1
Keywords integrated: PP2000, LEXIA, OLD versions, MHH AUTO, Page 1, Peugeot diagnostics, Citroën Lexia, DiagBox alternative, ACTIA VCI, offline telecoding, ECUs. Connect your interface to the car's OBD port
If you want, I can produce Page 2 with: detailed per-workstation diagnostics, a vehicle-compatibility matrix by model/year, or a costed migration plan — choose one. ECUs. If you want