Setting Adobe Acrobat Reader Preferences
Depending on your Adobe Acrobat Reader version, the steps below may differ.
1. Open Adobe Acrobat Reader outside of the application.
2. Select Edit, select Preferences, select Updater, and select the Do not download or install updates automatically option.
3. Select Edit, select Preferences, select General, and unselect the Enable Protected Mode at startup check box.
4. Select Edit, select Preferences, select Security (Enhanced), and unselect the Enable Enhanced Security check box.
5. Select Edit, select Preferences, select Security (Enhanced), and select the Automatically trust sites from my Win OS security zones check box and verify that the OPERA URL is listed.