Amazon Workspaces 5.0 Client on Windows - disable Windows Key

Unfortunately it is not possible to disable the Windows key on WorkSpaces. The WorkSpaces client captures certain special keys like Windows, Ctrl and Alt to enable features within the WorkSpaces session.

As an alternative, you could consider using third party applications that allow remapping keys if absolutely necessary to disable the Windows key for specific use cases. However, this may interfere with the WorkSpaces client functionality.