Error: "A protection device or license is required" (LM) (LSFORCEHOST environment variable) (Pervasive) Error: "Sentinel RMS Development Kit: Error[150]: The specified lock code is invalid." (protection device not recognized - License Manager - Pervasive)

Error: "A protection device or license is required" (LM license code is missing) (Pervasive)

Error: "A protection device or license is required" (LM server lost its licenses) (Pervasive)

Error: "A protection device or license is required" (LM) (A firewall is blocking the connection) (Pervasive)

Error: "A protection device or license is required to use Timberline applications" after installing Windows 10 version 1803. (Pervasive)

How can I tell the difference between a stand-alone USB protection device and a License Manager USB protection device? (Pervasive)