Kofax® Power PDF Standard has been set as a default application to open PDF files in Windows. How can I put it back to its former state? December 08, 2022 04:36 Updated Launch Kofax® Power PDF Standard and select Options in File menu. Click Startup under General, and select "Return to previous default PDF application". Related articles How many computers can I install Kofax® Power PDF Standard or Kofax® PDF Converter for Mac per license? How can I perform OCR (Optical Character Recognition) in English using Kofax® PDF Converter for Mac?