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COM Ports Won't Install At COM3 in Windows 2000

Symptom:

When I install my Digi product in Windows 2000, the new COM ports should start at 3 (or perhaps 5) but instead they start at a much higher number and I cannot rename them.

 

 

Cause:

  • There was a Digi product previously installed in the system, and although the physical board was removed the adapter was not removed from Device Manager.

     

  • A previously installed Digi product was not completely removed from the registry when the adapter was uninstalled.

     

      Solutions:

    • The Digi adapter must be removed from Device Manager even though it no longer appears. Follow the instructions for removing phantom ports at the URL given below.

       

    • To remove extraneous COM ports from the registry, follow the instructions given for removing phantom ports on the URL given below.

       

         

        Phantom port removal procedure

      Last updated: Aug 23, 2018

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