- Do one of the following: • In Acrobat, choose Tools > Sign & Certify > More Sign & Certify > Manage Trusted Identities. • In Reader, choose Edit > Protection > Manage Trusted Identities. ...
- Choose Certificates from the Display menu.
- Select the certificate, and click Delete.
How do I remove encryption from a PDF?
How to Remove Encryption From a PDF File
- Launch Adobe Acrobat on your computer.
- Open the protected PDF file and type the password when prompted. ...
- Click "Advanced" at the top of the Acrobat window. ...
- Click "OK" to confirm the action and remove the encryption. ...
- Press "Ctrl-S" to save the unencrypted PDF file.
Can you unsecure a PDF?
How to unlock a PDF to remove password security: Open the PDF in Acrobat. Use the “Unlock” tool: Choose “Tools” > “Protect” > “Encrypt” > “Remove Security.”
