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Not able to save changes to my UNITELWAY driver communication port settings.

First thing to check is the security permissions for the CnfUTW3.dat file in the Windows/System32 directory. Make sure that this file is set to allow (Full control, Modify, Read & execute, Read, Write and Special permissions.).  This file can also be manually modified with Notepad to reflect the new communication port settings required.  
 
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