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.

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

Cuireadh an snáithe seo sa chartlann. Cuir ceist nua má tá cabhair uait.

After installing Version 5 I get an error message about incompatibility and min and max versions.

  • 1 freagra
  • 1 leis an bhfadhb seo
  • 3 views
  • Freagra is déanaí ó cor-el

more options

I shutdown Zone Alarm, and deleted the contents of the file, which contained the "exe" file, then reinstalled Firefox version 5.0. I still get the XUL Runner error message about incompatibility of Version 5.0 with min and max 5.0.1. What next?

I shutdown Zone Alarm, and deleted the contents of the file, which contained the "exe" file, then reinstalled Firefox version 5.0. I still get the XUL Runner error message about incompatibility of Version 5.0 with min and max 5.0.1. What next?

All Replies (1)

more options

The updater wasn't able to update all the files and some were left as older versions.
You need to do a clean reinstall.

Download a fresh Firefox copy and save the file to the desktop.

  • Uninstall your current Firefox version.
  • Do not remove personal data when you uninstall the current version.

Remove the Firefox program folder before installing that newly downloaded copy of the Firefox installer.

  • 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 in the Firefox Profile 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.