Downloaded files are deleted automaticaly after completion
Every time I download files, they are deleted automatically,except for PDF files, after completion. I have tried e-mail attachments, utility downloads, patches, drivers, etc. with no luck. Help!
Opaite Mbohovái (4)
It is possible that your anti-virus software is corrupting the downloaded files or otherwise interfering with downloading files by Firefox.
Try to disable the real-time (live) scanning of files in your anti-virus software temporarily to see if that makes downloading work.
See "Disable virus scanning in Firefox preferences - Windows"
Already tried that with no change in result.
Tried it using your suggested Security changes with the same result. Thanks anyway.