RDCMan will not launch on fresh install of Windows 11 21H2 (OS Build 22000.613)

Joseph Hu 1 Reputation point

RDCMan will throw an error with this Windows build complaining about the version of mstscax.dll.
This is on a fresh installation of Windows 11 on a VM.

mstsc.exe works fine.

I had tried swapping out mstscax.dll with one I coped from a different VM running Windows 10 where RDCMan works but it does not change the behavior.

The version of mstscax.dll included with this build of Windows 11 is 10.22000.593.

Is there a maximum version of mstscax.dll that RDCMan is currently compatible with?
Is there a procedure to downgrade the required components of mstsc so that RDCMan will work?

Remote Desktop
Remote Desktop
A Microsoft app that connects remotely to computers and to virtual apps and desktops.
4,391 questions
Windows 11
Windows 11
A Microsoft operating system designed for productivity, creativity, and ease of use.
8,934 questions
Advanced system utilities to manage, troubleshoot, and diagnose Windows and Linux systems and applications.
1,126 questions
{count} votes

3 answers

Sort by: Most helpful
  1. Reza-Ameri 16,861 Reputation points

    I believe this is a bug, I advise you to open start and search for feedback and open the Feedback Hub app and report this issue.

    0 comments No comments

  2. John Stephens 366 Reputation points Microsoft Employee

    Thanks for the report. We have been unable to reproduce this issue. RDCMan uses the following class on Windows 8.1 and higher: https://learn.microsoft.com/windows/win32/termserv/msrdpclient9notsafeforscripting

    If someone can provide detailed steps, including the Windows edition and VM configuration, we will try to reproduce it.

    0 comments No comments

  3. 이종운 1 Reputation point

    The latest version of the OS does not have .Net 3.5 installed.
    Try installing the .Net 3.5 version.

    0 comments No comments