Can you please let me know the exact message that is being displayed or a screenshot of the same. Also, it would be helpful if you could let me know what is the version of Adobe Reader on your machine.
Thanks in advance for the information.
Also, it would be helpful if you could let me know what is the version of Adobe Reader on your machine.
...as well as your operating system.
Thanks for replying. I'm using Adobe 9 on Windows XP SP3.
Curiously the problem isn't happening today when I open Adobe Reader so not sure what's going on.
Was the issue replicating, everytime you were opening a PDF which was digitally signed? If, so then have a look at the below forum post. Might be the answer you are looking for: