If you have a confidential PDF you want to password protect, you have a few ways to do that on your Windows 11 PC. You can ...

It is a free encryption software that lets you easily encrypt PDF files. Skip to primary navigation; ... Allow or block Microsoft Edge from opening PDF files externally. VamienMcKalin@TWC.

To ensure that it’s encrypted, open the modified PDF. If the encryption was successful, a password prompt will appear. Re-enter the correct password to ensure that it works properly.