# Quickstart: Check security restrictions

When you receive a PDF, it may contain restrictions preventing actions such as printing or copying information.

1. Click Security Settings or Signatures to the left of the document window. (The Security Settings button only appears when the PDF contains security restrictions.)
2. View restriction information. In the Security Settings panel, you can click Permission Details to get more information.

If you cannot open a PDF or are restricted from using certain features, contact the PDF author.

Related Information

- Open secured PDFs