W&T connects
Interfaces for TCP/IP, Ethernet, RS-232, RS-485, USB, 20mA, glass and plastic fiber optic cable, http, SNMP, OPC, Modbus TCP, I/O digital, I/O analog, ISA, PCI
Current driver versions:

COM Port Redirector Plug & Play

Com-Servers under Windows XP/2003/Vista/7/2008/8/8.1/10 incl. 64-bit- and Server-Editions


Connect a Com-Server or a Web-IO with serial interface to the network, establish a virtual COM port on your system and your serial application is network-capable; without having to program a single line of code.

Date Changes and comments Revision
June 24, 2019
  • Options for preventing serial devices from being incorrectly interpreted as a mouse
4.34
EXE download
(approx. 9.18 MB)
April 6, 2018
  • Installation problem on unpatched Win7 systems fixed
  • Improved operation under XP/Server 2013
4.33
EXE download
(approx. 9.19 MB)
September 20, 2017
  • Installation problem under Win 8.1/2012R2 fixed
4.31
EXE download
(approx. 9.41 MB)
August 30, 2017
  • Attestation signing (fixes problems with current Win 10 versions in conjunction with Secure Boot)
4.30
EXE download
(approx. 8.93 MB)
August 9, 2017
  • Optimizations for silent installations
  • Optimizations for the Portmap tool
4.29
EXE download
(approx. 8.68 MB)
January 3, 2017
  • Optimizing of failed reconnects when there is simultaneous data sending
  • SHA256 signature for the installation exe
  • Cosmetic corrections for the version information details
4.26
EXE download
(approx. 8.83 MB)
October 26, 2016
  • Optimized start behavior
  • Cosmetic corrections in Config tool
4.24
EXE download
(approx. 8.78 MB)
June 14, 2016
  • Optimized connection handling for NAT connected virtual machines
  • Firewall-optimized reconnect after connection interruptions
4.23 EXE - approx. 8.56MB
[on request]
July 24, 2015
  • Port management in configuration tool corrected (deleting, creating, applying)
4.21 EXE - approx. 8.76MB
[on request]
January 5, 2015
  • Installation optimized
  • Corrections/additions to the optional tools Companion and Portmap
  • Setup of virtual COM ports optimized
4.20 EXE - approx. 8.76MB
[on request]
June 30, 2014
  • Serial API: Event handling revised/corrected
  • Optional baud rate-dependent write delay corrected
  • Cosmetic corrections in Config tool and Companion
4.12 EXE - approx. 8.37MB
[on request]
April 30, 2014
  • New setup as *.exe with language option
  • DNS resolution improved
  • Rare bluescreen mainly in virtual environments fixed
4.10 EXE - approx. 8.34MB
[on request]
March 10, 2014
  • Setup Helper revised
  • Signature for 32-bit drivers
  • Cosmetic correction to PortMap
4.06 MSI - approx. 4.46 MB
[on request]
September 12, 2013
  • Display of the application that opens a COM port in Portmap
  • Portmap installation optimized
  • Context help revised
4.04 MSI - approx. 4.35 MB
[on request]
April 9, 2013
  • Null terminating of the registry data in DeviceMap/SerialComm
4.03 MSI - approx. 4.3 MB
[on request]
February 4, 2013
  • Buffer handling for read requests optimized
4.02 MSI - approx. 4.3 MB
[on request]
January 15, 2013
  • COM Port Redirector integrated into plug-and-play system
4.01 MSI - approx. 4.3 MB
[on request]