Com1 Driver

Supported DCS products, refer to the USB CDC Driver for Windows page or the user guide of the scanner. If using DS3578 or LS3578, Bluetooth FIPs cradle part # STB3578-CF007WR must be used. Resolution / Answer. To emulate a COM port over a USB connection, please follow these steps 1. Headquartered in Parsippany, NJ, OHAUS Corporation manufactures an extensive line of weighing scales, lab equipment and lab instruments that meet the weighing, sample processing and measurement needs of multiple industries. We are a global leader in the laboratory, industrial and education markets, as well as a host of specialty markets, including the food preparation, pharmacy and jewelry.

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Connection to com1 Windows 10, com3 could not be opened – This problem can sometimes occur if you do not have the required drivers. To solve the problem, you must update the serial port driver and verify that it solves your problem. Putty cannot open Windows 10 serial port – Sometimes this problem can occur due to some Windows services.

A serial port may be useful, but some users have reported that the serial port message cannot be opened on their PC. This can be a big problem, and in today’s article we will show you how to solve it.

Problems with a serial port can be very annoying, especially if you tend to use the serial port frequently. When we talk about these types of problems, here are some related problems that have been reported by users:

  • Connection to com1 Windows 10, com3 could not be opened – This problem can sometimes occur if you do not have the required drivers. To solve the problem, you must update the serial port driver and verify that it solves your problem.
  • Putty cannot open Windows 10 serial port – Sometimes this problem can occur due to some Windows services. This is not a big problem, and you can solve it by disabling these services.
  • Access to the serial interface com1 cannot be opened – This problem may occur due to problems with the serial interface. To solve the problem, temporarily disable the serial port and see if it helps.
  • Com port cannot be opened win error code 5, 123, 32 – These are some common problems that can occur with a serial port, but you should be able to solve most of them with one of our solutions.

Windows may try to assign it to a COM port already in use. It seems that Windows sometimes gets an inconsistency in the registry of what has already been assigned.

To see if this is the problem (and if possible solve it), try changing the assigned COM port.

  1. Go to Device Manager > Ports (COM & LPT) > mbed Serial Port, then right-click and select Properties.
  2. Select the Port Settings tab and click Advanced.
  3. Under “COM port number”, try to select a different COM port.

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Note that Windows marks some of them as (in use), but does not consider them exhaustive, for the same reason that this problem may exist!

Com1 Drivers

Try switching it to a few different unused COM ports and see if it has an effect. If not, we will dive deeper to see what Windows is reporting.

And don’t forget to unplug the power cord after the change to recharge the driver and see all the results.

Communications port com1 driver

Try using another cable.

I noticed that using an older USB cable sometimes leads to a poor connection of the card. It would be moody if it worked sometimes and not differently. The problem was solved with a new or even different cable.

Com1 driver install


If you enter “Hyperterminal” in the Windows Start menu, right-click after the call and select “Run as administrator”. It should help you access the serial port.

Also check which COM port it uses. To do this, follow these steps:

1. press the window+R button

2. type devmgmt.msc

3. go to ports

Now check which port is assigned to the USE serial converter and use it in the spatula.

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CCNA, Web Developer, PC Troubleshooter

I am a computer enthusiast and a practicing IT Professional. I have years of experience behind me in computer programming, hardware troubleshooting and repair. I specialise in Web Development and Database Design. I also have a CCNA certification for Network Design and Troubleshooting.

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Table of Contents

This content relates to a deprecated version of Mbed

Mbed 2 is now deprecated. For the latest version please see the Mbed OS documentation.


For the latest information about Serial, please see The Windows Serial Driver.

The mbed serial port works by default on Mac and Linux, but Windows needs a driver. These instructions explain how to setup the mbed Microcontroller to use the USB serial port on Windows.

1. Download the mbed Windows serial port driver¶

Download the installer to your PC, e.g. your desktop.

2. Run the installer¶

With your mbed plugged in, and no explorer drive windows open, run the installer:

It will take some time (especially on Vista), and pop up a few 'unsigned driver' warnings, but after a while you should have a Serial port.

Where Next¶

  • SerialPC - Communication with a PC
  • Terminals - Guide to using terminal applications

Com1 Usb Driver Windows 7


If you have multiple mbed microcontrollers, but the serial port only appears for one of them:

  • Make sure you run the installer for every mbed; windows loads the driver based on the serial number, so it needs to be run for each mbed you use

If the installer fails because 'No mbed Microcontrollers were found':

Usb To Com1 Driver

  • Check your mbed Microcontroller is plugged in

If the installer reports the message 'mbedWinSerial_nnnnn.exe is not a valid Win32 application':

  • It is likely you are using Internet Explorer to download the installer file, which sometimes seems to only download part of the installer application for an unknown reason
  • To solve this, download the installer with a different browser (Firefox, Chrome), and try again; this should solve the issue.

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If the Installer appears to hang:

Hisilicon Com1 Driver

  • Check if windows has popped-up a 'unsigned driver/permission' window; these often get hidden behind other windows with nothing to indicate so in the taskbar! Windows may be waiting for you to click 'OK'!

Com1 Driver

If you have any problems, or think this tutorial could be improved, please tell us in the Forum!