When you forget the Password to a PDF it can be sooooooooo annoying
Till you remember the "hack"
you can easily and conveniently remove the password from a PDF file by opening it and printing it to a new PDF or just saving it as a new PDF. Your system will create a duplicate copy of the PDF, and that duplicate copy won't have a password
Click the drop-down menu that lets you pick your printer, then select "Save as PDF". Click the "Save" button, and you'll be prompted to provide a name and location for your new PDF. Your new PDF will contain the same content as the original PDF, but won't be password-protected.
If you don't have a Save to PDF option for some reason, look for "Print to PDF" instead. You can use this trick in any PDF viewer on Windows 10 or Windows 11. Just select "Microsoft Print to PDF" as the printer
This trick will only work if the PDF doesn't have any printing restrictions
- HowToGeek