We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

When I click on fficon on desktop I get: XUL RUNNER

  • 1 reply
  • 27 have this problem
  • 14 views
  • Last reply by cor-el

Blaine
Blaine
more options

Error: PLATFORM VERSION "IS NOT COMPATIBLE WITH:

min Version >= 1.9.2.16 max Version <= 1.9.2.16

FireFox does NOT open at all, just displays this message on the desk top.

Error: PLATFORM VERSION "IS NOT COMPATIBLE WITH: min Version >= 1.9.2.16 max Version <= 1.9.2.16 FireFox does NOT open at all, just displays this message on the desk top.

All Replies (1)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Do a clean (re-)install:

  • Uninstall your current Firefox version and remove the Firefox program folder before installing that copy of the Firefox installer.
  • Don't remove personal data if you uninstall the current version.
  • It is important to delete the Firefox program folder to remove all the files and make sure that there are no problems with files that were leftover after uninstalling.

Your bookmarks and other profile data are stored elsewhere (not in the Firefox program folder) and won't be affected by a reinstall, but make sure that you do not select to remove personal data if you uninstall Firefox.