Firefox supportforum

I can not open PDF files within Firefox, nor can I open them in an external program like Adobe Acrobat Reader. They automatically save to my Downloads folder instead. I have already changed the settings for "Portable Document Format (PDF)" under Options > General > Applications to be "Preview in Firefox" and I have also tried changing it to "Use Adobe Acrobat Reader DC". Neither seem to be working. It still downloads the file instead of opening it. I have also verified that there are no extensions that may be affecting the way the setting behaves, and there is nothing.

I keep getting popups from Firefox saying different things about Firefox. How can I stop it? They usually disappear in a few seconds, although the first one I get when I first open Firefox requires me to click an X in the corner to get it to go away. Very annoying.

Malwarebytes quarantined some viruses but could not delete from their site and asked me to try with their instructions: I could not do it so I uninstalled Firefox. When I tried to reinstall Malwarebytes Blocked the install. When I try to install a pop up states we see you had fire fox before we will reload for you. No other options. It fails

hi sir

I wish to block the website below form my firefox browser but cant seem to block it, pls help.

https://www.hao123.com/?tn=97473572_hao_pg

thanks regards sean