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Reddit
reddit.com › r/networking › usb-to-serial for console that works with windows 11?
r/networking on Reddit: USB-to-Serial for console that works with Windows 11?
July 9, 2024 -

Need some recommendations from fellow Network Engineers who have already dealt with this. Our org recently updated to Windows 11 and it killed our ability to use our USB to Serial adapters because of Windows core isolation/memory integrity settings. Our domain admins have given up trying to disable memory integrity for us so now it's on me to figure out a viable alternative for our console connections, and I really don't feel like rolling the dice on random purchases.

Anyone have a recommendation for a USB-to-Serial adapter that will work when Windows 11 Core Isolation security settings are all turned on? It really needs to be a legit serial connection on the adapter too because most of our network infrastructure doesn't have native USB console ports and also we are doing Serial over Ethernet in a few places and those require native serial on both sides.

Thanks in advance :)

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Reddit
reddit.com › r/sysadmin › usb to serial cable compatible with windows 11 - due core isolation
r/sysadmin on Reddit: USB to Serial Cable Compatible with Windows 11 - Due Core Isolation
December 4, 2024 - I have a Tripp-Lite USB to Serial (RS232) cable that is NOT compatible with Windows 11 due to Core Isolation being enabled. I did install their…
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Reddit
reddit.com › r/sysadmin › usb serial question for windows 11
r/sysadmin on Reddit: usb serial question for Windows 11
February 5, 2025 - I got a cheap sabrent adapter off amazon not that long ago that has a pl2303 chip and don't have issues with windows 11. ... Then you got an updated PL2303 chip, they just change the chip every now and then, so you will have to buy a new adapter when they stop creating updated drivers for your version of the chip. ... Have been using these for quite some time. Works fine on Win 11 ... The Keyspan one is pretty decent. ... It's also the most expensive USB to serial adapter ever made, I think.
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Reddit
reddit.com › r/windowsinsiders › can't install / use any usb serial cable on windows 11 arm (including latest build 22494)
r/windowsinsiders on Reddit: Can't install / use any USB Serial cable on Windows 11 ARM (including latest build 22494)
November 9, 2021 -

I recently got the new MacBook Pro with M1 Pro chip and installed the Windows 11 ARM on the latest parallels. I can use every hardware of my Mac and everything i plug into the laptop except for the USB Serial adapter. I tried different adapters with different chips like Prolific and FTDI, and none seem to work.

I don't think is a cable adapter issue, is more something of the OS. It doesn't event let me install the driver manually or doesn't seem to try to install it. Once plugged it, quickly shows the USB Serial Converter with exclamation point.

Anyone have the same issue?Here is how my Device Manage looks:

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Reddit
reddit.com › r/pcmasterrace › windows 11 and usb to serial
r/pcmasterrace on Reddit: Windows 11 and USB to serial
February 10, 2022 - Well it seems that Windows 11 is breaking various USB to serial adaptors. Of course all the remote techs I respect have addressed this themselves. Customer techs and techs we sub contract from another company on the other than? Indignantly clueless. "It worked before" "I dont know how to install ...
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Sabrent
sabrent.com › forum › support › customer support › windows 11 support for serial adapter
Windows 11 Support for Serial Adapter | Welcome
December 21, 2022 - As I am sure you have discovered, the primary suggestion is to completely uninstall/remove the driver through Device Manager and then to install an older revision of the driver after unplugging the device.
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Reddit
reddit.com › r/sysadmin › serial console over usb
r/sysadmin on Reddit: Serial Console over USB
November 1, 2025 -

This is probably a really simple question, but it's been giving me fits since Windows 11 was first introduced. None of the various USB->Serial adapters I've bought over the years are supported by Windows 11. The driver literally as a description of "THIS DEVICE IS NOT SUPPORTED BY WINDOWS 11". I had an older laptop sitting on top of my rack that I thought was immune from Windows 11, but apparently at some point in the last few months it caught the infection and now I have no more precious portable Windows 10-powered console access. Can anyone recommend a specific product that is supported by Windows 11 that will let me get into my Sonicwalls (with one DB9->RJ45 cable) and Dell switches & storage (which requires a completely different pinout DB9->RJ45 cable, damnit) without making me chase all around the goddamned internet for a third party unsupported undocumented driver that may or may not make my computer eat itself?

Find elsewhere
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EEVblog
eevblog.com › forum › general-computing › usb-to-serial-converter-for-windows-11
USB to serial converter for Windows 11
May 25, 2025 - EEVblog Captcha · We have seen a lot of robot like traffic coming from your IP range, please confirm you're not a robot · This security check has been powered by · CrowdSec
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PICAXE Forum
picaxeforum.co.uk › home › forums › main picaxe forum › active picaxe forum
Using cheap Prolific USB to Serial Adapters with Win 11 | PICAXE Forum
September 24, 2025 - For serial download ( programming) , the serial line needs to idle low with data high. This is why you got the error message. All you probably... ... FTDI USB adapters work perfectly well too. They generally cost more than the other two, but you can tweak their firmware to invert the signals so you don't need to add an external hardware inverter. BTW the Windows 10 drivers for the CP210x and CH340 work fine on WIndows 11, even if they are not digitally signed.
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Reddit
reddit.com › r/baofeng › windows 11 & prolific usb drivers
r/Baofeng on Reddit: Windows 11 & Prolific USB Drivers
October 13, 2021 -

Recently installed Windows 11 on one of my laptops and my programming cable stopped working after a security update (which was odd because it worked fine with Win11 for a while at first).

Device manager said the Prolific 2303 (2303TA in my case) wasn't supported by Windows 11 at all, but I found a workaround:

  • Download and install the appropriate driver package from https://oemdrivers.com/usb-prolific-usb-to-serial-driver

  • After installing, go to the Device Manager and find the device listed under Ports (COM & LPT).

  • Right click on the Prolific item in the list and click on Properties.

  • Click on Update Driver.

  • Click on Browse my computer for drivers.

  • Click on Let me pick from a list of available drivers.

  • You should see a list with several Prolific driver options. I chose driver version 3.8.25.0 (7/12/2018) and the cable resumed working as expected.

Hopefully the helps someone else in the future!

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Google Groups
groups.google.com › g › pxrf › c › UsCOAnoE-Kw
USB to serial adapter / Windows 11
This is not unheard of. Windows 10 and 11 tend to auto-install the latest drivers for things, including the drivers for the USB-Serial cable. The workaround is to install an older version of the driver.
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Reddit
reddit.com › r/microsoft › when purchased windows 11 pro usb, is there a way to get the serial before it arrives?
r/microsoft on Reddit: When purchased Windows 11 Pro USB, is there a way to get the serial before it arrives?
January 4, 2024 -

Waiting for my copy of Windows Pro 11 to show up, wondering is there is a way to get the serial from my account somehow so I can activate it now and not stare at the "Activate Windows" annoying watermark for the next 3 days, nor be able to use hyper v etc?

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Startech
community.startech.com › networking, serial, bluetooth
RS232 adapter cable and Windows 11 - Networking, Serial, Bluetooth - The IT Pro StarTech.com Community
January 8, 2024 - I have the ICUSB2321F adapter. We have started testing Windows 11. When I plug the adapter into the laptop, it says no drivers available. Do they work with Windows 11?
Top answer
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Hi Gordon,

Thank you for sharing your question. I get why it's important to get that USB serial converter up and running, and I'm here to help you out. Based on my knowledge this problem usually happens because Windows either doesn't install the right driver on its own, or the device actually needs a driver from the maker.

So, to fix it, plug the USB serial converter into your computer. If Windows doesn't install the driver automatically, open Device Manager by pressing the Windows key + X, then pick Device Manager. Check under Ports (COM & LPT) or Other Devices to find your converter. Right-click on the device and click Update Driver. Then, pick Search automatically for drivers. If Windows can't find one, get the correct driver from the maker's website FTDI and Prolific are common chipsets. After you download it, pick Browse my computer for drivers and show it the folder where you saved the driver files. After it's installed, restart your PC and make sure the device shows up under Ports (COM & LPT) with a COM port number.

May I also ask have you already looked to see if the device shows up in Device Manager? Also, do you know what kind of chipset it uses (FTDI, Prolific, or CH340)? Knowing this will help us make sure we get the right driver.

 

I hope this answer is helpful, if you have any questions, feel free to reply.

 

Best Regards,

Noel

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To install a USB serial converter driver, you typically need to ensure that the appropriate driver is loaded for your device. Here are the steps you can follow:

  1. Automatic Installation: If your USB serial converter is a standard device class that is included in Windows, the driver (Usbser.sys) should install automatically when you connect the device. Windows uses the compatible ID to load the driver from the system.
  2. Check Device Manager: If the driver does not install automatically:
    • Open Device Manager on your computer.
    • Look for your USB serial converter under Ports (COM & LPT) or Other Devices.
    • Right-click on the device and select Update Driver Software.
  3. Manual Installation: If Windows cannot find the driver:
    • You may need to download the driver from the manufacturer’s website or use a custom INF file if your device requires a specific driver.
    • If your device specifies class code 02 and subclass code 02, it should load Usbser.sys automatically. If it has a different subclass code, you might need to provide a custom INF file to specify the driver.
  4. Using INF Files: If you have a custom driver:
    • Create an INF file that references the driver and includes the hardware ID of your device.
    • Use the Add New Hardware Wizard to install the driver manually by pointing it to the location of your INF file.
  5. Restart Your Computer: After installation, you may need to restart your computer to complete the installation process.

If you encounter issues, ensure that you have the latest updates installed on your machine by visiting Windows Update regularly.

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Reddit
reddit.com › r/plc › usb to serial adapter driver
r/PLC on Reddit: USB to serial adapter driver
March 26, 2025 -

Hey yall. New to the automation world. I've got a SLC5 that I'm trying to go online with using an rs232 adapter. I'm missing the driver. The adapter is old as hell so I cant tell the brand. Do I need to download the driver straight from the manufacturer's website? Or is there a general driver i could download.

Ive done this before using different adapters, but I knew the manufacturer in those cases

Thanks

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Parallels
forum.parallels.com › threads › usb-to-serial-device-windows-11-arm.355591
USB to Serial Device - Windows 11 ARM | Parallels Forums
November 15, 2021 - I am trying to connect a USB to Serial cable to my computer (M1 MacBook Pro) running the latest version of parallels. I can configure the cable in the...