RDP protocol error code 0x112f

Peter 11 Reputation points
2021-04-09T06:48:41.017+00:00

Hi,
I have several computers, one is my main computer (windows 10 home), with two monitors. The other computers are in a seperate room, without monitors.
Since a few weeks, when I try to connect to one of my other computers using RDP, I get a protocol error code 0x112f when I use the option "Use all monitors for remote session". Several years before it worked fine.... And another computer is still working fine with 2 monitors....

Can you please help? It is possible that it is caused by an update on my remote computer.

Thanks!
Peter.

Remote Desktop
Remote Desktop
A Microsoft app that connects remotely to computers and to virtual apps and desktops.
4,244 questions

6 answers

Sort by: Most helpful
Most helpful Newest Oldest
  1. Peter 11 Reputation points
    2021-05-03T13:02:20.44+00:00

    The problem is solved! I have connected a physical monitor to the computer that I try to connect to. And changed the resolution. Now I am able to use 2 monitors again.
    Regards,
    Peter.

    2 people found this answer helpful.
  2. Leila Kong 3,691 Reputation points
    2021-04-12T06:25:30.893+00:00

    Hello @Peter ,

    Please try to use the group policy editor (Local Computer Policy\Computer Configuration\Administrative Templates\Windows Components\Remote Desktop Services\Remote Desktop Session Host\Remote Session Environment. Then disable “Use the hardware default graphics adapter for all Remote Desktop Services sessions”).

    Link: https://answers.microsoft.com/en-us/windows/forum/all/windows10-updates-rd-dual-monitor-and-last-opened/bdf97e6e-039b-4d85-aa05-3cc69b863394

    Best regards,
    Leila

    ----------

    If the Answer is helpful, please click "Accept Answer" and upvote it.
    Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

  3. Leila Kong 3,691 Reputation points
    2021-04-13T10:07:38.75+00:00

    Hello @Peter ,

    I am currently performing research on this issue and will get back to you as soon as possible. Your patience is highly appreciated.
    If you have any updates during this process, please feel free to let me know.

    0 comments
  4. Leila Kong 3,691 Reputation points
    2021-04-26T01:57:38.6+00:00

    Hello @Peter ,

    Is there any update on your side? You may also open a ticket to Microsoft for further professional help:
    https://support.microsoft.com/en-us/help/4341255/support-for-busines

  5. Phil 6 Reputation points
    2021-09-27T17:55:08.53+00:00

    Rebooting the PC I was RDCing onto solved the problem for me