Some 2012 versions use a (e.g., license.link or proexe.key ) that pairs with the dongle’s hardware ID. If you lose that file, recovery is impossible. Always copy the %APPDATA%\ProExe and %PROGRAMDATA%\ProExe folders.
Modern backup concepts like cloud-synced license tokens or hardware TPM-based backups did not exist for most Proexe systems. Users were often advised to: usb dongle backup and recovery 2012 proexe link
: Reduces physical wear and tear on expensive license keys by allowing them to be stored safely while the software uses the virtual backup. Usage Context Some 2012 versions use a (e