How to redirect the serial port between 2 Windows 11

Question

Hi

I want to redirect the serial port between 2 Windows 11 Pro. I have disabled in Groups Policy "Do not allow COM port redirection option" in both VMs and I have used Remote Desktop Connection client with Ports enabled in Local devices. However, the serial port is only partially redirected, i.e. it is visible in the command line as redirected:

but not in Device Manager and cannot be used by other applications (Tera Term). Could someone explain what is wrong with this setup ?

thank you

Bogdan

Answer 1

Hello

Thank you for posting in Q&A forum.

Here are some suggestions for your references.

1. In the Remote Desktop Connection client, go to Local Resources and ensure that Ports is checked under Local devices and resources.
2. Ensure that the necessary drivers for the serial port are installed on both VMs. Sometimes, the redirection won't work if the drivers are missing or outdated.
3. After connecting via RDP, open Device Manager on the remote VM and check under Ports (COM & LPT) to see if the redirected COM port appears. If it doesn't, try refreshing the Device Manager or reconnecting the RDP session.
4. You can also configure COM port redirection in the RDP file. Open the .rdp file in a text editor and add the following line: redirectcomports:i:1
5. Sometimes, specific applications might have issues with redirected COM ports. Test the redirection with different applications to see if the issue is application-specific.

I hope the information above is helpful.

If you have any questions or concerns, please feel free to let us know.

Best Regards,

Daisy Zhou

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