Error 21000012c or 20000107 on Epson printer


  1. Make sure you only have the target printer (ie: the one you wish to reset) connected to your computer and turned on.
  2. Try selecting the specific port that your target printer is connected on rather than “Auto Select” (Via “Settings” button in AdjProg utility)
  3. Use Compatibility Mode as Windows XP Service Pack 3
  4. Try to change the driver / resetter to another type, like L200 for L100 printer, etc
  5. This option is a last ditch attempt if all else fails (This method sometimes works around any power saving or similar issues that stop the printer communicating properly) :
    • Prepare everything for resetting (ie: input key, etc…)
    • Turn printer off, wait 5 seconds and turn printer on
    • Wait 2 or 3 seconds then try to reset waste ink counter

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