Mozilla Frequently Asked Questions

Tip: If you are using Mozilla, you can find your topic by simply typing search keyword directly in the Web page (e.g. type upgrade). To repeat a search, press Ctrl+G (Cmd+G on Mac OS X).

General
  1. What is Mozilla?
  2. For whom is Mozilla 1.x intended?
  3. Is Mozilla free?
  4. What features does Mozilla have?
  5. Where can I download language packs or Mozilla in my language?
  6. I cannot find the latest version for Mac OS 9
  7. What are the differences between Mozilla and Netscape 7?
  8. Will Firefox and Thunderbird replace the Mozilla Application Suite?
  9. What are the differences between Mozilla and Firefox?
  10. How do I upgrade my version of Mozilla?
  11. Does Mozilla include crash recovery?
  12. Can I use AOL Instant Messenger directly in Mozilla, like in Netscape?
  13. Will uninstalling Netscape 4.x affect Mozilla?
  14. Printing does not work, why? (Linux)
  15. Text displays ugly (fonts not anti-aliased) (Linux)
Browser
  1. Install Can I install just the browser, not the rest?
  2. System How do I make Mozilla my default browser?
  3. System Why doesn't Mozilla allow me to run an .exe (executable) file directly from an Internet location?
  4. System I just installed Mozilla and now it stole the .jpeg and .gif file associations! (Windows)
  5. Page Display Text zoom does not stick. How do I permenantly enlarge/reduce text size?
  6. Page Display @Text displays ugly (fonts not anti-aliased) (Linux)
  7. Page Display On some web sites, the images do not load
  8. Password @The password manager does not save my password!
  9. Plug-ins What plug-ins does Mozilla support?
  10. Plug-ins How do I control how files are handled by the plug-ins / helper applications
  11. Plug-ins Does Mozilla support ActiveX controls? (Windows)
  12. Plug-ins Mozilla prompts me to download plug-ins all the time. But I don't want to install any plug-in, what do I do?
  13. Plug-ins How do I block flash?
  14. I've heard about tabbed browsing. How do I use it?
  15. I've heard about popup blocking. How do I do this?
  16. Can I control the browser with mouse gestures?
  17. Networking I can only download four files simultaneously.
  18. Networking I'm using dial-up. Can I speed up displaying pages with lots of images?
  19. Networking How do I set up Mozilla to dial (connect) automatically? (Windows)
  20. Networking How do I stop Mozilla from activating the auto-connect? (Windows)
  21. I have Internet Explorer pop-up windows, why?
Mail & Newsgroups
  1. Install Can I install just the mail program, not the rest?
  2. System How do I make Mozilla my default mail program?
  3. System Can I use a different mail program with Mozilla?
  4. Account How do I set up multiple SMTP (outgoing) mail servers?
  5. Account I cannot find any place to enter my passwords for my accounts. Where do I enter my passwords?
  6. Security Is Mozilla Mail & Newsgroups susceptible to e-mail viruses?
  7. Security How do I use S/MIME, PGP or GnuPG to send and receive signed or encrypted messages?
  8. Data Migration How do I import e-mail messages from another mail program?
  9. Data Migration How do I export e-mail messages to another mail program or computer?
  10. Data Migration Why didn't Mozilla migrate my Netscape 4.x address book?
  11. Data Migration How do I import or export address books from or to another program?
  12. Is there a way to show HTML (formatted text) messages as plain text only?
  13. Can I access my Netscape WebMail or Hotmail accounts through Mozilla Mail & Newsgroups?
  14. Does Mozilla come with a spellchecker?
  15. Is there a mail notifier in Mozilla?
  16. Does Mozilla Mail & Newsgroups include a calendar function?
  17. News How do I make newsgroup names appear expanded, not abbreviated?
  18. News How do I read or post ROT13 in the newsreader?
  19. News How do I combine and decode in Mozilla?
  20. News How do I re-arrange newsgroup subscription?
Profile & Backup
  1. General What is my profile?
  2. General Can I share a profile with Netscape 7 or with an earlier version of Mozilla?
  3. General How do I set up multiple profiles?
  4. General Where is my profile stored?
  5. General What is the @$%#@$%#.slt directory in my profile directory?
  6. General How do I force Mozilla to open with a specific profile?
  7. General Whenever I try to open a second Mozilla window, I get a warning that the profile is in use. How do I open multiple instances of Mozilla? (Linux)
  8. Data Migration How do I move my Netscape 4.x profile to Mozilla?
  9. Backup & Restore How do I back up my profile data?
  10. Backup & Restore How do I restore my profile data from backup?
  11. Backup & Restore How do I transport my profile to a different machine?
  12. Backup & Restore I copied my profile over to a new location, and some data (mail) do not appear!
  13. Backup & Restore @Help, my bookmarks are all gone!
  14. Backup & Restore @My system crashed when I exited Mozilla. Now all my mail are gone. What do I do?
  15. Backup & Restore @My profile is missing (from the Profile Manager), how do I get it back again?
  16. Sharing Does Mozilla support roaming profiles?
  17. Sharing How do I share mail between Windows and Linux on a dual boot PC?
  18. Security How do I protect data of my profile (from local machine access)?
Security & Privacy
  1. Password @The password manager does not save my password!
  2. Mail @Is Mozilla Mail & Newsgroups susceptible to e-mail viruses?
  3. Mail @How do I use S/MIME, PGP or GnuPG to send and receive signed or encrypted messages?
Extension & Customizing Mozilla
  1. How do I turn on this hidden preference I have heard about?
  2. Appearance How do I use different icons for each Mozilla component?
  3. Appearance How do I change the splash screen at startup?
  4. Toolbar Can I get a smaller toolbar with no text/picture?
  5. Toolbar Can I move the toolbars around?
  6. Bookmark How do I change the location of my bookmarks file?
  7. Bookmark Can I use macros/browser scripts in Mozilla?
  8. Extension I tried to install a Mozilla add-on (.xpi) directly from a Web page, but clicking the ‘Install’ link didn’t work.
  9. Extension Where can I get add-ons for Mozilla functionality?
  10. Extension I have downloaded a Mozilla add-on XPI file, but can’t figure out how to install it.
  11. Extension How do I uninstall an extension?
  12. Password How do I use RoboForm on Mozilla?
  13. Search How do I search from the Location Bar?
  14. Search How do I add/change my search engines?
  15. Search Can I have more than one keyword search engines?
Composer
  1. Can Composer edit Cascading Style Sheets (CSS)?
  2. Does Composer have a FTP/site manager?
  3. What Web development tools does Mozilla have?
  4. Composer seems basic. Where can I get a more advanced, Mozilla-based editor?
Troubleshooting Mozilla
  1. Browser Why doesn’t my page look right in Mozilla?
  2. Browser I’m trying to view a file on a website, and the address looks correct, but all I see is a bunch of garbled garbage on my screen.
  3. Browser My bank site blocks Mozilla!
  4. Profile & Data I cannot open Mozilla / my profile. Mozilla says the profile is in use.
  5. Profile & Data My system crashed when I exited Mozilla. Now all my mail are gone. What do I do?
  6. Profile & Data My profile is missing (from the Profile Manager), how do I get it back again?
  7. Profile & Data Help, my bookmarks are all gone!
  8. Profile & Data I keep loosing my mail/bookmarks/profile data!
  9. Mail Help! I can’t access my e-mail any more!
  10. Mail My anti-virus program thinks my INBOX has a virus and won’t let me access my INBOX!
  11. Browser Why can’t I access secure (https://) Web sites? (Linux)
  12. Browser @Printing does not work, why? (Linux)
  13. Browser I’m using a transparent proxy (such as Junkbuster) and I’m having weird browsing problems. What’s happening?
  14. Browser Middle click (or Ctrl+click) on a link does not open a new tab.
  15. Customization I love a theme I’m using, but weird things are happening with it. Is there a way to fix it?
  16. System I use GNOME. I installed Mozilla from a mozilla.org binary, and now Nautilus isn’t working properly.
  17. Browser My toolbar/menubar is gone! How do I get it back?
  18. Browser My personal toolbar is empty, and I cannot add any bookmarks to it. How do I fix it?
  19. Browser The sidebar comes up empty.
  20. Download I cannot download large files.
  21. Download File downloading has been very slow lately, why?