To protect your computer from files originating from the Internet or other potentially unsafe locations, turn on Protected View to open these files to reduce risks. In Protected View, files are read only and most editing actions are not allowed.
1. Turn off protected view mode for current PDF file in the bubble pop-up
When you open a PDF file under protected view mode, a bubble message would appear at the upper right corner of the document area as shown below. Click on Enable All Features to turn off protected view mode temporarily for the PDF file opened in current tab.
In some cases, the notification messages in Foxit PDF Editor were set not to show the message which affects the next step under General tab in Preferences window. There would not be any bubble message appearing even when a PDF file is opened under protected mode. Then you should turn off protected view mode via Preferences.
2. Turn off protected view mode via Preferences
To set up your application to never open PDF document in protected view mode, please go to File > Preferences > Security, select Off under Protected View, click on OK to apply the change.
Some professional documents contain complex elements like interactive form fields, multimedia content, attachments ,and layering. These elements may leave PDFs vulnerable to malicious actions and threaten data security. Foxit PDF Editor enables users to specify privileged locations to selectively trust files, folders and hosts in order to bypass security restrictions.
You can customize trust settings for Foxit PDF Editor, which is helpful to make your PDF workflow both secure and efficient. To specify the settings, click File>Preferences>Trust Manager.