How to create PDF on Windows 8.1 64-bit ?
1. Download and install PDF Printer for Windows 8.1
2. Open your document to be printed
3. Select from main menu "File"->"Print"
4. Choose the "PDF Printer" printer
5. If you need to adjust PDF generation options, click the "Property" button on the right
6. Click "OK"
7. A dialog will pop up, assign the folder or file name of the PDF document to be generated
8. Congratulations! You have created a PDF file on Windows 8.1 64-bit (x64 edition).