How to set com ports in windows xp

Launch the PowerShell in Admin mode and paste the following command:. Many programs or devices require exclusive access to the serial port.

Communication via a serial COM port means that only one application can control a serial device at a time. If the COM port is occupied by another application, then errors in the operation of various programs or drivers may occur due to a serial COM port locking conflict. This guide has been tested on Windows 11, but it applies to all previous versions of Windows as well.

It is completely free, and you can download it from the official website. This utility helps you to modify the registry parameter ComDB in a simple way without taking the risk of accidentally removing or editing wrong strings in the Registry Editor. If a device is not connected, hit Remove non-present devices. This will clear all assigned COM port numbers and make them available to assign.

You can also clear the COM port manually, by unchecking a specific device from the list. You can also use a third-party tool called Device Cleanup Tool to remove non-present devices and clean up occupied COM ports.

The Device Cleanup Tool is available for free from the official website. Now you can remove all unused ports using their IDs. Now, let us talk about the most challenging methods on how to delete COM ports in use. All that is needed is the Registry Editor which is a part of every Windows installation. Back up the important data and create a system restore point.

Follow the instruction strictly and be careful not to edit random fields. I have tried this in Win 7 x64 and I do not see the ports that are not connected. I am using a USB to Serial adapter FTDI — virtual com and when the usb side of the device is connected to the computer it shows in Device Manager, when the usb side of the device is not connected to the computer is does not show in Device Manager even when using your directions.

Windows Right click start menu, click device manager. After all, this is why GUIs were invented. I tested this just a few minutes ago and yes, it looks like it has changed a little bit. Got it working. You need to do this. Then type: start devmgmt. Then go up to view and show hidden devices. It can be very frustrating to query your Device Manager with the expectation of finding COM ports only to find that they are not present.

We are going to show you two different methods you can use to add COM ports to Windows One is a procedure that employs the native functionality built into the operating system and the other uses third-party software. Locating virtual COM port in Windows 10 can be a problem for users. You navigate to your Device Manager with the expectation to see the virtual COM port drivers that were previously loaded on your machine and find they are not there.

The serial port option might not be available due to the installation of a Windows 10 update. The update may have impacted the ability of the virtual serial port drivers for certain devices to load by default. This poses a significant issue when you are trying to use these devices.

We provide a step-by-step procedure which can help you eliminate issues related to COM ports on Windows 10 in as little as three clicks. Read on to learn more about how to use this efficient virtual COM port driver for Windows There is a way to resolve this annoying problem in a manner that will prevent it from recurring. This application allows the creation of an unlimited number of virtual serial port pairs. The virtual COM port pairs employ a virtual null-modem connection to enable communication with each other.

Users engaged in the practice of developing and testing serial applications and hardware will benefit from the configuration options that are possible through the use of Virtual Serial Port Driver. One example is the ability to allow two applications to share data via virtual serial ports. Connecting the apps with a pair of virtual COM ports lets the data written by one program be immediately made available to the other program.

This can save significant time and effort when debugging and testing serial apps and devices. Most often, virtual COM ports in Windows 10 install automatically when a user connects a converter to a computer with internet access. This is not a major issue, as users can simply install the drivers utilizing the disk that comes with their specific Serial Converter. Follow the instructions below to install Serial Converter device drivers from a disk:.

Some software applications are designed to only operate with designated serial ports. If you need to work with this kind of program, you may need to know how to find port numbers in Windows 10 so you can modify them if necessary. In many cases when working with older devices or applications, you will be called upon to change COM port numbers to successfully operate the programs and peripherals. Some legacy equipment is only capable of working with specifically named serial ports. The following procedure allows Windows users to change the COM port number for any attached device.

Windows may have assigned a different identifier to the port which you will be required to modify. There are many instances where this Windows 10 COM Port Driver software can be instrumental when working with serial devices and applications. Privacy policy. For most devices, the Ports device setup class and the Serial function driver provide the functionality required to operate serial ports and COM ports.

To install serial ports and COM ports using these system-supplied components, do the following:. Provide an INF file that specifies the Ports device setup class and the Serial function driver as the service for the port. For more information about installing serial ports and COM ports using the Ports device setup class and the Serial function driver, see the following topics:.