中招了Citrix Workspace app 2109.1问题的朋友进，先卸载2109，再安装2108版本即可。 The Receiver Clean-Up utility is designed to assist with the following scenarios: When errors occur during upgrade from an earlier version of Receiver or Online Plug-in When unexpected behavior or performance is experienced after upgrade from an earlier Receiver or Online Plug-in If Receiver upgrade is not possible due to feature incompatibility and/or a clean uninstall is required The Receiver Clean-Up Utility removes components, files, and registry values of Online Plug-in 11.x, 12.x, and Receiver for Windows 3.x, 4.x (Online Plugin-in 13.x, 14.x). This includes the Offline Plug-in component if installed and HDX RealTime Media Engine if installed.