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If I uninstall Mozilla then re-install it, will I lose bookmarks, etc?

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  • 13 have this problem

In Vista, Mozilla won't even start up in some user profiles anymore. So I want to uninstall it and reinstall it. But if I do this, will we lose bookmarks in the user profiles where it works? What are my options so I don't have to switch back to Internet Explorer?

Additional System Details

This happened

Every time Firefox opened

This started when...

a few weeks ago

Installed Plug-ins

  • The QuickTime Plugin allows you to view a wide variety of multimedia content in Web pages. For more information, visit the QuickTime Web site.
  • Adobe PDF Plug-In For Firefox and Netscape "9.4.3"
  • Default Plug-in
  • Shockwave Flash 10.2 r152
  • Adobe Shockwave for Director Netscape plug-in, version 11.0
  • iTunes Detector Plug-in
  • Windows Presentation Foundation (WPF) plug-in for Mozilla browsers
  • Rhapsody Player Engine Plugin
  • Reader Library Helper Plugin
  • Java Plug-in 1.6.0 for Netscape Navigator (DLL Helper)


  • User Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv: Gecko/20110319 Firefox/3.6.16

More Information

It works in two user profiles but not the third profile.

Scott Plunkett 4 solutions 48 answers

Helpful Reply

No, You will not lose bookmarks if you just uninstall and re-install Mozilla Firefox. However, if you delete the File Mozilla Firefox it will. So as long as you just go to Add/Remove Programs and Remove it from there.

Thank You,

Mozilla Firefox Support Agent - Scott

  • Moderator
1041 solutions 8840 answers

Helpful Reply

When you uninstall Firefox there is an option to "Remove my Firefox personal data and customizations", this option is not selected by default. As long as you do not select that option your bookmarks etc will not be deleted.

Re-installing Firefox does not usually solve problems, this troubleshooting article may help - https://support.mozilla.com/kb/Firefox+will+not+start