I have a pdf file with links to other documents. When a click on the link, a security alert pops up. I then tick the box that asks Adobe to remember to allow the linked document to open. The next time I return to the link and click on it, the same security alert pops up. How can I stop it?
Go to Preferences > Security (Enhanced) and set a host as a privileged location.
Go to Preferences > Trust Manager > Internet Access and allow that URL.