Once you've decided on a native or alternative PDF reader to open your file and changed your Windows settings, locate the PDF file in File Explorer. Either double-click the file or right-click the ...

Learn how to always open PDF files in Protected View in Word. Stop Word from opening PDF files in Protected View using GPEDIT or REGEDIT.

No matter your operating system, knowing how to combine PDF files is a good skill. We'll teach you the best ways to do so for Windows, macOS, or via the web.