Print jobs not sent to HP printer queue from SendPro Desktop Application

Products affected: SendPro® Desktop Application

Issue

When printing stamp sheets or envelopes from the SendPro Desktop Application, the HP printer queue does not receive the print job. No error message is displayed.

Cause

The HP printer driver in Windows is not accepting print jobs from SendPro.

Resolution

UPDATED: May 13, 2020
To resolve this issue, follow these steps to change the printer driver for your HP printer to the HP Universal Print Driver. 
  1. Disconnect the HP printer's USB cable.
  2. Go to HP's Universal Print Driver download page.
  3. Select the + symbol next to Driver-Universal Print Driver.
  4. Select the Download button for HP Universal Print Driver for Windows PostScript.
  5. Run the downloaded file.
  6. Select Unzip in the WinZip Self-Extractor wizard window. The Setup Wizard should start.
  7. Select Yes to the License Agreement.
  8. Select USB mode - Plug and Play.
  9. Leave both boxes checked under USB mode - Plug and Play.
  10. Select Next.
  11. After installation, the wizard will instruct you to plug in the USB cable to the printer.
  12. After plugging the printer USB cable in, select Finish.
  13. Restart the SendPro Desktop Application.

If the issue is still not resolved:

  1. Close the SendPro® Desktop Application.
  2. Open the Windows Control Panel.
  3. Open Administrative Tools.
  4. Open Services.
  5. In the Services window, right-click on Print Spooler and select Stop. Leave the Services window open.
  6. In Windows Explorer, navigate to C:\Windows\System32\spool\PRINTERS\.
  7. Delete all files in this folder.
  8. Return to the Services window.
  9. Right-click on Print Spooler and select Start.
  10. Close the Services window.