RDCMan v3.91 crashes with connecting to Windows 2022 Server

dCipher 0 Reputation points
2025-05-29T15:45:41.5666667+00:00

Hi

I have no problem connecting to my Windows Server 2022 using the remote desktop client. However, when I use RDCMan it often takes 10 or more tries before it connects. It initially displays a black screen with a rotating blue ring beside the mouse pointer. As soon as the blue ring disappears RDCMan vanishes from my screen. There is no message of any kind instead RDCMan just disappears. It works fine when connecting to my Linux servers. Is there a log or something that I can search to see what causes the problem?

Simon

Sysinternals
Sysinternals
Advanced system utilities to manage, troubleshoot, and diagnose Windows and Linux systems and applications.
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  1. Micheal Darby 81 Reputation points
    2025-06-02T17:08:48.21+00:00

    Hi dCipher, can you confirm the version of RDCMan you are using. The current version is 3.1.0. I hate saying it, but it might be worthwhile re-downloading the latest version and trying again. It may be a compatibility issue with an older version.

    RDCMan Link: https://learn.microsoft.com/en-us/sysinternals/downloads/rdcman#download


  2. dCipher 0 Reputation points
    2025-06-09T14:41:45.9066667+00:00

    I am using version 3.1. I did discover one cause. I am using a security software that blocks access to the server after 5 failed attempts from the same IP address. However, this should not cause the RDCMan to crash. Instead I would expect it to say connection blocked on something similar.

    Simon

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