Whenever I try to open Firefox the following window pops up: XUL Runner/ Error/ Platfor Version "5.0" is not compatible with/ minVersion =5.0.1/ maxVersion =5.0.1/ OK(button) What do I do to get Firefox to work again?

I have been using Firefox for quite some time (years). It tried to upgrade Firefox and since then have not been able to get it to open, each time it comes up with that popup window, with my only option being to click on the OK button, which terminates the operation.

The updater wasn't able to update all the files and some were left as older versions.<br />
Do a clean reinstall.
Download a fresh Firefox copy and save the file to the desktop.
* Firefox 5.0.x: http://www.mozilla.com/en-US/firefox/all.html
* 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.
* http://kb.mozillazine.org/Profile_folder_-_Firefox
* http://kb.mozillazine.org/Profile_backup

Similar Messages

  • Downloaded Firefox 6.0.2 and when launching get XUL Runner "Error: Platform version 6.0 is not compatible with minVersion =6.0.2 maxVersion =6.0.2

    After downloading Firefox version 6.0.2 launching get XUL Runner "Error: Platform version 6.0 is not compatible with minVersion>=6.0.2 maxVersion<=6.0.2

    If using Zone Alarm's browser virtualization or any other similar product or a sand-boxing program (i.e., Sandboxie), turn it off when updating Firefox or Firefox Add-ons. You can post on the forum for any such product that you might be using to get other instructions on the proper use of the product.
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    #Download a fresh Firefox copy and save the file to the desktop.
    #*Firefox 6.0.x: http://www.mozilla.com/en-US/firefox/all.html
    #Uninstall your current Firefox version.
    #*'''''Do not remove personal data when you uninstall the current version'''''
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    #*See [http://support.mozilla.com/en-US/kb/uninstalling+Firefox Uninstalling Firefox] '''''and''''' [http://kb.mozillazine.org/Uninstalling_firefox Uninstalling Firefox (Mozillazine)]
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    #Remove the Firefox program folder before installing that newly downloaded copy of the Firefox installer.
    #*It is important to delete the Firefox program folder/directory to remove all the files and make sure that there are no problems with files that were leftover after uninstalling.
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  • Downloaded firefox 5.0.1 last night, worked fine, Turned computer on today, Mozilla Firefox, it won't start. Get error message, Error: Platform version '5.0' is not compatible with minVersion =5.0.1 maxVersion =5.0.1" What do I need to do to fix it?

    We downloaded firefox 5.0.1 last night, began working with it. It did fine. After about an hour, I turned off my computer. When I turned on my computer, I click on Mozilla Firefox and it won't start. I get this error message, " Error: Platform version '5.0' is not compatible with minVersion >=5.0.1 maxVersion <=5.0.1" from XUL Runner. What do I need to do to fix it?

    The updater wasn't able to update all the files and some were left as older versions.<br />
    Do a clean reinstall.
    Download a fresh Firefox copy and save the file to the desktop.
    * Firefox 5.0.x: http://www.mozilla.com/en-US/firefox/all.html
    * 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.
    * http://kb.mozillazine.org/Profile_folder_-_Firefox
    * http://kb.mozillazine.org/Profile_backup

  • Error: Platform version 6.0 is not compatible with minVersion = 6.0.2 maxVersion = 6.0.2 so what do I do? Using Win 7

    Error: Platform version 6.0 is not compatible with minVersion >= 6.0.2 maxVersion <= 6.0.2 so what do I do? Using Win 7 Home Premium

    If you use ZoneAlarm Extreme Security then try to disable Virtualization and do a clean reinstall.
    * http://kb.mozillazine.org/Browser_will_not_start_up#XULRunner_error_after_an_update
    *[[/questions/869812]]
    *[[/questions/869951]]

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    On the top of the above message is says XULRunner

    I have exactly the same problem and my Zone Alarm Security software is causing the problem when I try to open Firefox, however this did not happen in any previous versions of Firefox I have had, including version 6.0.0
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  • I cannot open firefox anymore...I recieve the following error message....Error platform version '8.0'is not compatible with minversion = 7.0.1 maxversion = 7.0.1 How do I fix this?

    cannot use firefox

    The updater wasn't able to update all the files and some were left as older versions.<br />
    Do a clean reinstall.
    Download a fresh Firefox copy and save the file to the desktop.
    * Firefox 5.0.x: http://www.mozilla.com/en-US/firefox/all.html
    * 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.
    * http://kb.mozillazine.org/Profile_folder_-_Firefox
    * http://kb.mozillazine.org/Profile_backup

  • I updated firefox to 6.0.1 today now it will not open just ...XUL Runner..Error: Platform version '6.0' is not compatible with minVersion =6.0.1 maxVersion =6.0.1 Help please!!

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    Are you using ZoneAlarm (Extreme)?<br />
    If you have then try to disable that and do a clean reinstall of Firefox.
    The updater wasn't able to update all the files and some were left as older versions.
    Download a fresh Firefox copy and save the file to the desktop.
    * Firefox 6.0.x: http://www.mozilla.com/en-US/firefox/all.html
    * 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.
    * http://kb.mozillazine.org/Profile_folder_-_Firefox
    * http://kb.mozillazine.org/Profile_backup

  • Firefox won't run: XULRunner - Error: Platform version 5.0 is not compatible with miniVersion = 5.0.1 maxVersion =5.0.1

    Got this error. Tried to download and reinstall latest version. Said that it installed/upgraded ok. Tried to run again and got same crash.

    The updater wasn't able to update all the files and some were left as older versions.
    Download a fresh Firefox copy and save the file to the desktop.
    * Firefox 5.0.x: http://www.mozilla.com/en-US/firefox/all.html
    * 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.

  • Firefox 6.0 will not run if Zone Alarm is active, gives error: XULRunner, Error Platform Version 6.0 is not compatible with minVersion + 6.0 maxVersion = 6.0

    Windows 7
    If Zone Alarm is disable Firefox runs

    Try to ask in the ZoneAlarm forum.
    *http://forums.zonealarm.com/

  • I need to silently upgrade from 3.5 to 7 but get an error message after 7 install. Platform version 7.0 is not compatible with minVersion = 1.9.1

    I'm trying to silently upgrade my environment to FF 7. I've gotten the silent install working great, it puts in my Proxy Server info, reassigns the home page and all that. But, the last version we pushed out was FF 3.5. If a user had that on their PC and they run the FF7 install, they get weird messages when clicking on the icon.
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    You need to do a clean reinstall.
    Download a fresh Firefox copy and save the file to the desktop.
    * Firefox 7.0.x: http://www.mozilla.com/en-US/firefox/all.html
    * Uninstall your current Firefox version.
    * Do not remove personal data when you uninstall the current version or you lose your bookmarks and other data in the profile folder.
    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.
    * http://kb.mozillazine.org/Profile_folder_-_Firefox
    * http://kb.mozillazine.org/Profile_backup

  • I had downloaded and installed one of those automatic Windows update and now whenever I try to open my Firefox I get an error message, "Platform version 6.0.2 is not compatible with minVersion 6.0.1 maxVersion 6.0.1

    I had downloaded and installed one of those automatic Windows update and now whenever I try to open my Firefox I get an error message, "Platform version 6.0.2 is not compatible with minVersion >6.0.1 maxVersion <6.0.1

    If you use ZoneAlarm Extreme Security then try to disable Virtualization.
    Do a clean reinstall and delete the Firefox program folder.
    * http://kb.mozillazine.org/Browser_will_not_start_up#XULRunner_error_after_an_update
    *[[/questions/869812]]
    *[[/questions/869951]]

  • Cannot open Firefox due to this message: Error: Platform version "6.0.2" is not compatible with minVersion =6.0.1 maxVersion =6.0.1

    I cannot open Mozilla Firefox. Instead, a XULRunner dialog box appears with the message: Error: Platform version "6.0.2" is not compatible with minVersion >=6.0.1 maxVersion<=6.0.1 edit
    Can you please tell me how to solve this problem? I have been running Mozilla Firefox on my Dell laptop with Windows 7 os.
    Thanks

    If you use ZoneAlarm Extreme Security then try to disable Virtualization.
    Do a clean reinstall and delete the Firefox program folder.
    * http://kb.mozillazine.org/Browser_will_not_start_up#XULRunner_error_after_an_update
    *[[/questions/869812]]
    *[[/questions/869951]]

  • The new upgrade to Firefox 4.0 has rendered the browser useless. Error message is XUL Runner Platform Version 2.0.1 not compatible with minVersion =2.0 maxVersion =2.0. How do I get any version of Firefox to load again?

    XUL Runner Platform Version 2.0.1 not compatible with minVersion>=2.0 maxVersion<=2.0

    Do a clean (re-)install:
    * Download a fresh Firefox copy and save the file to the desktop.
    * Firefox 4.0.x: http://www.mozilla.com/en-US/firefox/all.html
    * Firefox 3.6.x: http://www.mozilla.com/en-US/firefox/all-older.html
    * Uninstall your current Firefox version and remove the Firefox program folder before installing that copy of the Firefox installer.
    * Do not 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.

  • After upgrading to 10.0.2 I get "Error:Platform version 9.0.1 not compatible with 10.0.2" and I have to reinstall ver 9

    I'm, running WinXP Sp3. I downloaded 10.0.2 and installed it as an upgrade as I have done successfully with all other new versions. It installs, but when it tries to load I get the following error: Platform version '9.0.1' is not compatible with minVersion >= 10.0.2, maxVersion <=10.0.2. I then have to run Win Uninstall, and then reinstall 9.0.1 to be able to get back online.

    If you use ZoneAlarm Extreme Security then disable Virtualization and reinstall Firefox.
    See:
    *http://kb.mozillazine.org/Browser_will_not_start_up#XULRunner_error_after_an_update
    *[[/questions/880050]]

  • After last automatic update, error message XUL Runner error platform version '6.0.2' is not compatible with minVersion 6.0.1. maxVersion 6.0.1. I am unable to open Mozilla Firefox at all. Had to use Explorer to ask this question!

    After last automatic update, error message XUL Runner error platform version 6.0.2. is not compatible with min Version 6.0.1 maxVersion 6.0.1 appeared every time I try to open/run Mozilla Firefox.

    See:
    *[[/questions/869812]]
    *[[/questions/869951]]

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