Windows 11 has tightened security by disabling older, unsigned drivers and deprecating the old "Generic Text Only" driver for complex bidirectional devices. The PR2 Plus typically uses a proprietary protocol (often referred to as Olivetti Standard or IBM Proprinter emulation).
Because Olivetti did not release an official "PR2 Plus Driver for Windows 11," we must rely on backward compatibility and manual configuration.
Follow this exact sequence to avoid errors.
| Error | Likely Cause | Solution |
|-------|--------------|----------|
| "Driver is not digitally signed" | Windows 11 blocks old drivers | Disable driver signature enforcement temporarily, or switch to Generic/Text driver. |
| Prints symbols / wingdings | Wrong print processor | Change from TEXT to RAW in Printer Properties > Advanced. |
| Printer feeds paper but doesn’t print | Baud rate mismatch | Set COM port to 9600,8,N,1 with hardware flow control. |
| USB not recognized | Missing USB-to-Serial chip driver | Check Device Manager; install FTDI/CH340 driver. |
| Can’t print passbook | Paper size not defined | Create custom paper size in driver settings. |
Windows 11 Pro/Enterprise includes Hyper-V. Create a virtual machine running Windows 7. Pass through the USB/serial port to the VM. Install the original Olivetti driver inside the VM. Share the printer as a network printer back to the host Windows 11.
