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

Joseph Hu 1 Reputation point
2022-05-01T21:32:09.13+00:00

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.
198057-rdcman-error-screenshot.png

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.
198081-mstscaxdll-version-info.png

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
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A Microsoft operating system designed for productivity, creativity, and ease of use.
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Sysinternals
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3 answers

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  1. Reza-Ameri 16,861 Reputation points
    2022-05-04T14:58:30.927+00:00

    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.

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  2. John Stephens 366 Reputation points Microsoft Employee
    2022-12-02T23:37:15.457+00:00

    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.

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  3. 이종운 1 Reputation point
    2022-12-30T08:40:57.027+00:00

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

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