Here is a step-by-step instruction on how Serial Port Monitor ActiveX Control should be installed on the target machines (you can include this as a part of your software installation). Please, note that you need to own the SDK License to be able to redistribute Serial Port Monitor ActiveX Control without any limitations. Only the SDK License grants commercial royalty-free redistribution rights.

Quiet registration procedure (see below) is used to register on the end-users’ machines Serial Port Monitor ActiveX Control, incorporated into your software.

Installation in Windows (32-bit and 64-bit): XP/2003/2008/ Vista/7/8/10, Windows Server 2012, 2016, 2019

  • Copy necessary files on target PC

The following files should be copied to the target machine’s temporary (permanent) installation directory. All these files can be found in the folder where you have Serial Port Monitor ActiveX Control installed.

FileDescription
 SPSniff.sys Serial port driver for 32-bit operating systems
 SPSniff64.sys Serial port driver for 64-bit operating systems
 spssetup.exe Executable that will install serial port monitoring driver
 spsniffer.dll Serial Port Monitor ActiveX Control


  • Register serial port driver

Once all these files are copied on the target machine, your installation program should execute “spssetup.exe” without any parameters. This will register “SPSniff.sys” and “SPSniff64.sys” in the system and load them.

  • Register ActiveX Control

Finally, you should register Serial Port Monitor ActiveX control by issuing the following command in the folder where spsniffer.dll is located:

regsvr32 spsniffer.dll /i:”Name#code”

where “Name” is registration name and “code” is registration code. For example:

regsvr32 spsniffer.dll /i:”TEST TEST#xxxxx-W9FC5V-31AXAX-F884EC-WN7G92-X3VXEE-21CFEE-524E94-651198-2A84FA-663C11-xxxxxx”

Once Serial Port Monitor ActiveX Control is registered on the target computer, you can use its properties and methods the same way as any other ActiveX Component.

Uninstallation procedure

In order to uninstall this ActiveX control, please, follow the steps below:

  • Unregister ActiveX control

Unregister our ActiveX control by executing:

regsvr32 spsniffer.dll /u

  • Uninstall Serial Port Monitor driver

Serial Port Monitor driver can be uninstalled by executing:

spssetup.exe /u

  • Remove all files you have copied on the target PC before