When I download pdf from email, I cannot saved the pdf file, it said "the document "abcde.pdf" could not be saved as "abcde.pdf". Previously this problem never occur. I always open the pdf files with password on it, saved it with different file names to my download folder, and when I open again the file, it opened without me needing to type in the password anymore.
But now, I cannot even saved the pdf file. What happened here? Need help ASAP. It seems the problem occur after I download the newest OS. Thank you so much.