How to Download and install STM32 Virtual COM Port driver?

STM32 Virtual COM Port driver” is software act as COM port emulator that provides flexible port creation, management, and removal. This driver software supports control lines and high speed of data transfer between STM32 Virtual COM Ports. This technology is especially designed for users who develop, test, or debug serial port software and hardware.

STM32 Virtual COM Port driver software package contain 8 files with 3.31MB of memory size. It is available for Microsoft Windows Operating System in which mostly used on Windows 7 and 10 OS based computer. About 25% of this software user is belongs to United States (US) country while France and Germany’s users are also using this driver for their STM32 Virtual COM Port on computer.

The path of this driver software will be “C:\Program files\STMicroelectronics\Software\ STM32 Virtual COM Port Driver\” in your computer after driver installation is finish, and it will take 3.31MB of size of your computer memory but the memory size can  be  vary according to driver versions you are installing.

Features of STM32 Virtual COM Port driver:

  • The driver software package is available for Windows 98SE, 2000, XP, Vista and Windows 8.x
  • It is compatible with x86 and x64 Windows OS architectures.
  • Starting from Windows 10, driver for STM32 Virtual COM Port like “STSW-STM32102” driver is no more adequate and usage of the native inbox driver is recommended.
  • This driver run on STM32 32-bit microcontrollers based on ARM Cortex-M processor.

STM32 Virtual COM Port driver not working Issue

If STM32 chips belong to STMicroelectronics or STM32 Virtual COM Port driver not working properly for some reasons, you can check for its drivers in “Device Manager” whether it is installed properly or not. Virtual COM Port driver issues usually occur due to missing, corrupted or outdated the drivers.

On other hand, the problem might occur after upgraded your PC from older version to Windows 10 instead of clean install of Windows 10. In this case, you need to update or reinstall drivers for STM32 Virtual COM Port on your Windows 10 computer to fix the problem.

How to Fix STM32 Virtual COM Port driver not working on Windows 10?

Method 1: Check for “Yellow Exclamation mark” on STM32 Virtual COM Port driver in Device Manager

“Yellow Exclamation mark” on any device in “Device Manager” states that the drive for such device is outdated or incompatible with Operating System. You can check for STM32 Virtual COM Port with the steps below.

Step 1: Press “Windows + X” keys together from keyboard and select “Device Manager”

Step 2: In the opened “Device Manager” window, expand “Other devices” or “Ports (COM & LPT)” category

Step 3: Click on STM32 Virtual COM Port in the list of drivers and check if it shows “Yellow Exclamation Mark” on it. If yes, then update for this driver is required.

Method 2: How to Download and Install STM32 Virtual COM Port driver Windows 10

Step 1: Open your web browser and visit “STMicroelectronics official website”

Step 2: On the top of webpage, search for “STM32 Virtual COM Port driver” in Search box and click on available active driver link

Step 3: In the next window, click on “Get Software” button under the selected driver

Step 4: In “License Agreement” screen, read the term & conditions carefully and then click on “Accept”

Step 5: Now, login into existing account or register for new account

Step 6: Follow on-screen instructions to finish download and installation process.

Step 7: Once installed, reboot your computer to save the changes

Method 3: How to update or reinstall STM32 Virtual COM Port driver?

Sometimes, STM32 Virtual COM Port driver not working issue occurs due to outdated drivers so you need to update the driver to fix.

Step 1: Open “Device Manger” and expand “Other devices” or “Ports (COM & LPT)” category

Step 2: Right-click on “STM32 Virtual COM Port” and select “Update driver software..”

Step 3: Select “Search automatically for updated driver software” in next window and follow the on-screen instructions to finish update process

Step 4: Once updated, restart your computer to see the changes.


I hope this post helped you to know about STM32 Virtual COM Port driver, and how to download/install and update its driver to fix problem with STM32 Virtual COM Port on Windows 10. You can read & follow our steps to do so. If this post really helped you, then you can share this post with others to help them.