This was the primary version available around 2010–2012.
Microsoft identified a serious security vulnerability (specifically an XML parsing issue) where malicious actors could craft a specific .rdg (configuration) file. If an admin opened this malicious file in RDCMan, it could execute code on the administrator's machine under their credentials. remote desktop connection manager 2012 link
Remote Desktop Connection Manager (RDCMan) is a Microsoft Sysinternals utility designed for managing multiple remote desktop sessions, often used in Windows Server 2012 environments. The tool offers hierarchical organization, live thumbnail previews, and inherited connection settings to streamline administrative tasks. For the latest version and direct download, visit Microsoft Learn . This was the primary version available around 2010–2012