Issues with Firefox

Before checking the following issues, you might want to look at the official list of known issues for Firefox 1.0.

Please note that this is not the place to file your bug reports. To do this, first search the Firefox Bugs forum and post there, to ensure that your bug has not already been filed. If it hasn’t, you should then submit your bug to Mozilla's Bugzilla but, again, only after intensely searching through it first.

Installation

• Problems with upgrading Firefox, including broken extensions and themes.

User interface

• Firefox won't start up
• Alt-Enter to open a link a new tab won't work for Windows ME/98(SE)
• Firefox asks for a nonexistent Master Password
• Open File dialog has the OK button grayed out. Also: Open File dialog is behaving weirdly in some other way.

Extensions

• Problems with uninstalling extensions.

Plugins

• Problems with installing Java.
• Problems with installing Flash.
• Problems with viewing PDF files.

Problems with specific websites

• "Document contains no data" error occurs for some web pages
• A website looks wrong in Firefox but works in a different browser
• Certain websites look like garbage
• Links to Local Pages Don't Work

Versions older than 1.0

• Oddities installing more than one extension at a time (Firefox 0.8 only)
• The installer ate my files
• Click on a link shortcut or Favorites in Windows displays an error or opens two windows/tabs.