Select Edit > Preferences.
Last updated on
Jun 21, 2026
Protected mode
From the Categories list on the left pane, select Security (Enhanced).
From the Sandbox Protections section, select or deselect Enable Protected Mode At Startup.
- Enable Create Protected Mode Log File to record events. The changes take effect the next time you start the application.
- Select View Log to open the log file.
Protected view
For additional security and to avoid potential security risks associated with files that may have originated from unsafe locations, use the Protected View mode. In the Protected View mode, most features are disabled. You can view the PDF, but not do much else.
In the Protected View, a yellow bar displays on top of the Reader window. Click Enable All Features to exit the Protected View.
