What's New in This Version of Virtual Serial Port Driver

Virtual Serial Port Driver PRO 10.0.844

Released: Feb 24, 2021

Added: a new, redesigned user interface.
Added: the ability to create loopback connections.
Added: the ability to assign custom names to serial port bundles.
Added: the ability to view the port status within the selected port bundle.
Added: detailed info about current settings and amount of data sent and received by the selected serial port.
Added: the ability to save data from the Activity log to a file.
Improved: the Standard and PRO versions of Virtual Serial Port Driver are now put together in one build.
Improved: the software drivers have been updated.
Fixed: minor issues with a loopback pinout scheme.

Virtual Serial Port Driver 9.0.575

Released: May 23, 2019

Improved: new software drivers have passed WHQL testing and are now digitally signed by Microsoft. Virtual Serial Port Driver can work on systems with Secure Boot enabled.

Virtual Serial Port Driver 9.0.567

Released: August 8, 2017

Added: Windows Server 2016 support.
Added: full Windows 10 support.
Improved: new software protection system.
Improved: GUI compatibility with high-resolution monitors.
Improved: displaying a more detailed information about the virtual serial ports in the device manager.
Improved: drivers are digitally signed with WHQL.
Improved: the ports are marked as occupied to the system, which prevents them from being overlapped (e.g. by USB to serial driver).
Improved: the information about created virtual ports is removed after the application uninstallation.
Fixed: displaying of the newly created virtual ports in the device manager.
Fixed: timeouts processing during the read operation.
Fixed: flow control displaying when a serial port was opened by HyperTerminal.

Virtual Serial Port Driver 8.0.428

Released: December 7, 2016

Fixed: a BSOD when an I/O operation was canceled by the program operating the port.
Fixed: on Windows 2003 32-bit, a BSOD on opening the GUI with a certain ports configuration.
Fixed: incorrect ports behavior after the system was woken up from sleep mode.
Fixed: unreliable creation/removal of multiple ports, when done too quickly.
Fixed: ports not being created in the VC example provided with the OEM version.

Virtual Serial Port Driver 8.0.412

Released: July 14, 2015

Added: possibility to create ports for the current user session only. Allows RDP users to create port with the same name (e.g. COM1) in each user session.
Added: you can enable automatic update of ports’ list, thus you can see pairs created in other user sessions.
Improved: instantaneous ports creation lets working with them even before PnP manager detects the newly added ports.
Improved: ports can be deleted even if they are open by other applications.
Fixed: loopback pinout wouldn’t save for a ports pair after the system reboot.
Fixed several issues: canceling IRP and timeout Read/Write operations.

Virtual Serial Port Driver 7.2.308

Released: November 7, 2013

Added: 64-bit version of Virtual Serial Port Driver library for creating 64-bit applications
Added: Java code sample in the OEM build
Improved: overall application stability
Fixed: BSOD when serial port was opened by Ham Radio Deluxe software
Fixed: BSOD when trying to cancel IOCTL_SERIAL_GET_WAIT_MASK request
Fixed: BSOD when trying to cancel Read call
Fixed: BSOD caused by low timeout value used with write requests accompanied by high system load
Fixed: several BSOD cases, including those caused by timeout requests and attempts to cancel all read, write and ioctl calls

Virtual Serial Port Driver 7.1.289

Released: October 31, 2011

Improved: synchronization of data transmission between virtual ports. Helps achieve lossless data transmission and avoid system hanging.
Improved: virtual ports creation now consumes less CPU resources, which is very convenient when using VSPD on notebook processors
Improved: virtual ports (created by applications with VSPD embedded) are not displayed in “Devices and Printers” list by default. Special command should be used to enable virtual ports display.
Fixed: hanging of data transmission on multicore systems caused by incorrect synchronization of virtual ports
Fixed: inaccessibility of real ports when virtual ports with the same names (serial ports overlapping) were deleted on Windows 7
Fixed: application crash at opening virtual port several times in a second. Now serial port statistics synchronization is much improved.

Virtual Serial Port Driver 7.0.1.263

Released: July 26, 2010

Added: full Windows 7 support
Added: signal lines pinout scheme while customizing pinouts
Added: detection of the application virtual serial port was created with
Added: program uninstaller verifies that Virtual Serial Port Driver is not launched
Added: application restart is not required after entering registration info
Added: virtual serial port pairs, created by Virtual Serial Port Driver, are removed after the program uninstallation
Improved: Virtual Serial Port Driver and all of its internal drivers stability
Fixed: BSOD when virtual serial port is opened with strict baud rate value less than 8 Bd
Fixed: BSOD when virtual serial port, created by VSPD on a real machine, was used by a virtual machine as physical real port
Fixed: data distortion during transmission on multicore systems
Fixed: bug with granting port access to an application
Fixed: data loss during simultaneous data transmission from both ports with “Xon/Xoff” option enabled
Fixed: freezing of application, which opened virtual serial port created by VSPD, if RTS_CONTROL_TOGGLE parameter was enabled
Fixed: multicore system freezing during data transmission with Xon/Xoff or Hardware Flow Control enabled
Update: Windows 98 and Windows NT 4.0 support is available only in OEM version now

Virtual Serial Port Driver 6.9.1.134

Released: August 5, 2008

Fixed: bug in interface in Windows XP Embedded

Virtual Serial Port Driver 6.9.1.132

Released: March 23, 2008

Added: Windows Server 2008 support
Improved: our drivers successfully passed Microsoft Windows Hardware Quality Labs (WHQL) tests and are digitally signed by Microsoft now
Improved: drivers stability
Virtual port creation speed is greatly increased
Fixed: minor bug in interface in Windows 98/NT
Fixed: several minor bugs and glitches

Virtual Serial Port Driver 6.0.1.117

Released: March 17, 2008

Improved: multi-processors support
Improved: Baudrate emulation is enhanced greatly
Fixed: some stability issues
Fixed: several minor glitches

Virtual Serial Port Driver 6.0.1.115

Released: May 22, 2007

Totally refreshed, more flexible and user friendly interface
Virtual Serial Port Driver and all of its internal drivers are now digitally signed
Virtual Serial Port Driver is completely compatible with Windows Vista
Added: completely new Serial Ports Explorer, which helps you get full information about all serial ports present in system
Added: port access list, which is used to restrict access to created ports for various applications (for Windows 2000/XP/2003/ Vista)
Added: applications, which are connected to created virtual serial ports are displayed in Serial Ports Explorer
Added: current virtual port settings (Handflow, Chars, Line, Baudrate, Timeout) are changing automatically depending on port settings at the remote end (OEM only)
Improved: different pinout presets (standard/loopback/custom) for more convenient usage of various null-modem schemes
Improved: virtual serial ports are now located in “ports” group in Device Manager
Improved: multi-processors support
Virtual port creation speed is greatly increased
Fixed: some stability issues
Fixed: minor glitches

Virtual Serial Ports Driver XP 5.1.7.60

Released: August 3, 2006

Fixed: minor bug appeared under 64-bit operating systems

Virtual Serial Ports Driver XP 5.1.7.58
Released: July 18, 2006

Fixed: uninstallation issues under Windows NT4

Virtual Serial Ports Driver XP 5.1.7.57

Released: February 23, 2006

Fixed: Real port detection procedure

Virtual Serial Ports Driver XP 5.1.7.56

Released: February 21, 2006

Added: new event Break_OFF handling for virtual ports
Improved: virtual port creation process during system boot

Virtual Serial Ports Driver XP 5.1.3.41

Released: September 8, 2005

Virtual Serial Ports Driver works now under 64-bit Windows versions

Virtual Serial Ports Driver XP 5.0.3.31

Released: July 20, 2005

Added ability to select Virtual Serial Port created by configuration manager in “Add a printer” wizard (after Windows reboot)

Virtual Serial Ports Driver XP 5.0.2.25

Released: July 5, 2005

Security bug is fixed

Virtual Serial Ports Driver XP 5.0.2.21

Released: June 8, 2005

Improved User Manual
Syntax errors in Configuration Utility were corrected
Minor interface enhancements (new icons)

Virtual Serial Ports Driver XP 5.0.2.20

Released: June 7, 2005

Hardware pinout/wiring customization
Strict baudrate emulation for Windows NT
Line break emulation
Major interface changes (detailed information about virtual serial pair, custom pinout)
Get complete information about virtual serial port directly from driver(current state, sent/received bytes Baudrate/ControlLine/Handflaw state etc.)
Serial port overlapping (you may create virtual port with existing real name (COM1, COM2 etc) and operate it)
Virtual serial ports are created by driver at the Windows startup
Clients don’t need to close all existing virtual serial ports to reconfigure them
Existing virtual port pairs are enumerated and graphically represented
Small enhancements and a few bugs are fixed

Virtual Serial Ports Driver XP 4.5.9.102

Released: May 17, 2004

Strict baudrate emulation
Support for Windows XP SP2, Windows 2003 Server
Hyperthreading is supported
Interface is improved
Some bugs are fixed

Virtual Serial Ports Driver XP 4.0.7.77

Released: February 20, 2004

VSPDXP and VSPD 9x are merged
Completely new and revised program interface
Windows XP SP1 support is added

Virtual Serial Ports Driver XP 3.0.2.30

Released: November 14, 2003

Completely NEW kernel
Support of WDM, PnP, WMI technologies
Full compatibility of program interfaces with standard Windows “serial.sys”
Signal lines and flow control emulation
Multiple ports creation/manipulation
“Hot” installation and port creation is added
New improved interface

Virtual Serial Ports Driver XP 2.0.15.29

Released: June 19, 2003

Windows NT support
Program interface improved
Few minor bugs are fixed

Virtual Serial Ports Driver 9x 2.0.0.11

Released: June 7, 2003

Windows Me support
Program interface improved
Some bugs are fixed

Virtual Serial Ports Driver 9x 1.0.6.53

Released: June 19, 2000

Windows 9x support
One virtual serial pair support
No signal lines emulation

What’s New in This Version of Virtual Serial Port Driver