引用自:View or change the Office or Outlook Product Key 補上2016
同仁Outlook打不開,從新增/移除修復Office後解決,但修復完需重打序號,且碰到序號無法啟用(90天內轉移限制),
因此從指令來改為其他未使用之序號。(從新增/移除變更序號要等較久)

In the command prompt, type the following:

  • Office 2010 (32-bit) on a 32-bit version of Windows 
    cscript "C:\Program Files\Microsoft Office\Office14\OSPP.VBS" /inpkey:序號
  • Office 2010 (32-bit) on a 64-bit version of Windows 
    cscript "C:\Program Files (x86)\Microsoft Office\Office14\OSPP.VBS" /inpkey:序號
  • Office 2010 (64-bit) on a 64-bit version of Windows 
    cscript "C:\Program Files\Microsoft Office\Office14\OSPP.VBS" /inpkey:序號
  • Office 2013 (32-bit) on a 32-bit version of Windows 
    cscript "C:\Program Files\Microsoft Office\Office15\OSPP.VBS" /inpkey:序號
  • Office 2013 (32-bit) on a 64-bit version of Windows 
    cscript "C:\Program Files (x86)\Microsoft Office\Office15\OSPP.VBS" /inpkey:序號
  • Office 2013 (64-bit) on a 64-bit version of Windows 
    cscript "C:\Program Files\Microsoft Office\Office15\OSPP.VBS" /inpkey:序號
  • Office 2016 (32-bit) on a 64-bit version of Windows 
    cscript "C:\Program Files (x86)\Microsoft Office\Office16\OSPP.VBS" /inpkey:序號
    Office 2016 (64-bit) on a 64-bit version of Windows 
    cscript "C:\Program Files\Microsoft Office\Office16\OSPP.VBS" /inpkey:序號