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.

Similar Messages

  • After installing Firefox 5.0 and attempting to open the browser I get: Error: Platform Version '2.0.1' is not compatible with MinVersion = 5.0 MaxVersion = 5.0 At the top of the message is Yul Runner

    While installing Firefox 5.0 and attempting to open the browser I get: Error: Platform Version '2.0.1' is not compatible with MinVersion > = 5.0 MaxVersion < = 5.0
    Above the message in the border was XULRunner

    That can happen if the updater wasn't able to update (replace) all the files in the Firefox program folder (C:\Program Files\Mozilla Firefox\).
    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 [http://kb.mozillazine.org/Profile_folder_-_Firefox 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.

  • Can't open re-installed Firefox - get this message: Error: platform version5.0 is not compatible with minVersion = 6.0 maxVersion = 6.0

    Had to uninstall Firefox as it stopped working. The went to website and downloaded Firefox once more. Pressed the .exe and the file went through the installation okay, but when I tried to open Firefox I get:
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    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 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.

  • Firefox on't open; error message = Platform '5.0' not compatible with minversion =2.01 maxversion =2.01

    Just installed Firefox 5.0 yesterday. No problems till now.
    Came in for the day. Had last used Firefox about 3 hours earlier without incident. Tried to open, but message said it was already open so I should restart it, or failing at that, restart my system. After rebooting, I get this eror message when I try to open Firefox.
    "Platform '5.0' not compatible with minversion>=2.01 maxversion<=2.01"

    The updater wasn't able to update all the files and some were left as older versions.<br />
    You need to 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 [http://kb.mozillazine.org/Profile_folder_-_Firefox 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.

  • Error: Platform version '25.0' is not compatible with minVersion = 26.0 maxVersion = 26.0 HELP!

    Hi All,
    I keep getting this error message when opening Firefox on my computer. However, if I run it as an Administrator it works fine. I have uninstalled and reinstalled Firefox including downgrading to older versions and still no luck. This is the Error I get:
    Error: Platform version '25.0' is not compatible with minVersion > = 26.0 maxVersion < = 26.0 edit
    Any help would be greatly appreciated.

    If you use ZoneAlarm Extreme Security then disable Virtualization and reinstall Firefox.<br />
    Other security software may have similar features to prevent Firefox from updating files properly.
    See these pages for a similar issue with corrupted files:
    *http://kb.mozillazine.org/Browser_will_not_start_up#XULRunner_error_after_an_update
    Do a clean reinstall and delete the Firefox program folder before (re)installing a fresh copy of the current Firefox release.
    Download a fresh Firefox copy and save the file to the desktop.
    *Firefox 26: http://www.mozilla.org/en-US/firefox/all.html
    if possible uninstall your current Firefox version to cleanup the Windows registry and settings in security software.
    *Do NOT remove personal data when you uninstall your current Firefox version, because all profile folders will be removed and you lose personal data like bookmarks and passwords from profiles of other Firefox versions.
    Remove the Firefox program folder before installing that newly downloaded copy of the Firefox installer.
    *(32 bit Windows) "C:\Program Files\Mozilla Firefox\"
    *(64 bit Windows) "C:\Program Files (x86)\Mozilla Firefox\"
    *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.
    *http://kb.mozillazine.org/Uninstalling_Firefox
    Your bookmarks and other personal data are stored in the Firefox profile folder and won't be affected by an uninstall and (re)install, but make sure that "remove personal data" is NOT selected when you uninstall Firefox.
    If you keep having problems then also create a new profile.
    *http://kb.mozillazine.org/Profile_folder_-_Firefox
    *http://kb.mozillazine.org/Profile_backup
    *http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Clean_reinstall

  • I get the error: Platform version '1.9.2.6' is not compatible with minVersion =1.9.2.8. How do I make it compatible?

    I get an error message. Error: Platform version '1.9.2.6' is not compatible with minVersion>= 1.9.2.8 maxVersion

    You did delete the "C:\Program Files\Mozilla Firefox\" directory?
    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.
    See also http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Clean_reinstall
    You can skip the step to create a new profile, that is not necessary for this issue.

  • Updated Firefox is not compatible with my low vision software - Zoomtext. How can I get Firefox to stop asking me to upgrade!!

    Currently using version 3.6.27 as the updated versions are not compatible with my low vision software called Zoomtext. I constantly get Firefox asking me to upgrade. How can I get it to stop asking me to upgrade. (I have tried each upgrade and they are all incompatible with Zoomtext.

    Go to '''Options''' window > '''Advanced''' panel > '''Update''' tab > '''Firefox updates '''> click '''Never check for updates (not recommended: security risk)''', click '''OK''' to save it, exit firefox and restart it.
    see for more info: [https://support.mozilla.org/en-US/kb/Options%20window%20-%20Advanced%20panel#w_update-tab Options window - Advanced panel - Update tab]
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    Please mark "Solved" the answer that really solve the problem, to help others with a similar problem.

  • When I double-click the desktop icon I get an error message: XUL RUNNER error: Platform version '2.0.1' is not compatible with minVersion =5.0 maxVersion =5.0. I must right click the icon and choose 'RUN OUTSIDE THE SANDBOX' to open the browser.

    This problem occurred shortly after updating to Firefox 5.0 I kept getting reminders to update to 5.0 When I finally decided to update, the first 4 or 5 attempts failed for one reason or another always with a different error message At some point after and extended shutdown of the computer 5.0 was initiated.

    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.
    * 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 [http://kb.mozillazine.org/Profile_folder_-_Firefox 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.

  • I tried opening firefox this morning which it would not let me do, instead I received an error message that read: error-Platform version 10.0.1 is not compatible with minversion =10.0,maxversion =10.0" I am not sure what I can do. Thank you

    I noticed that firefox updated last night before I shut down my computer, then when I turned it on this morning I received the error message I described above. It will not let me open firefox.

    I solved the problem by reinstalling the updated version and it now works fine. Thank you for getting back to me so quickly.

  • Received the following Error Msg: Platform Version '6.0' is not compatible with minVersion =6.01, maxVersion =6.01

    When I brought up my machine this afternoon, it started to download 6.0.1 and then I received an error msg from ZoneAlarm requesting that I upload an error file. This occurred several times, and then I uninstalled the Firefox files and again downloaded 6.0.1. At this point I then received the Version 6.0/6.0.1 error msg.

    If you use ZoneAlarm Extreme then you may have to disable that during the installation to prevent ZA from blocking access to some files in the Firefox program folder (C:\Program Files\Mozilla Firefox\).
    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

  • I get the following message when I attempt to start Firefox 5.0 - Error: Platform version 2.0.1 is not compatible with minVersion = 5.0 maxVersion = 5.0

    I was asked to upgrade to version 5.0 tonight. As soon as I upgraded, Firefox stopped working with the above error. I tried uninstalling and reinstalling several times, but I got the same message.

    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 [http://kb.mozillazine.org/Profile_folder_-_Firefox 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.

  • After installing Firefox 6.0 and attempting to open the browser I get: Error: Platform Version '5.0.1' is not compatible with MinVersion = 6.0 MaxVersion = 6.0

    I am running a Windows 7 computer with ZoneAlarm internet security.

    That can happen if the updater wasn't able to update (replace) all the files in the Firefox program folder (C:\Program Files\Mozilla Firefox\).
    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 [http://kb.mozillazine.org/Profile_folder_-_Firefox 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 doesn't start and I get this: "Error: Platform version '18.0.1' is not compatible with minVersion = 18.0 maxVersion 18.0

    Firefox worked and then when I shut down and restarted I suddenly started getting this message. What can I do?

    Such an error is always caused by inconsistent files in the Firefox program folder (application.ini and/or platform.ini and possibly others) and your only option is to reinstall that version of Firefox, either via the software repositories or the Mozilla server.<br />
    Be sure to delete all files in that folder before copying the files from that tar.bz2 archive.<
    *http://kb.mozillazine.org/Installing_Firefox#Linux
    Note that the current ESR version is 10.0.5
    *http://www.mozilla.org/en-US/firefox/organizations/all.html
    *http://www.mozilla.org/en-US/firefox/17.0.5/releasenotes/
    *http://www.mozilla.org/en-US/firefox/17.0.5/system-requirements/
    All Firefox releases:
    *https://ftp.mozilla.org/pub/mozilla.org/firefox/releases/ (17.0.5esr/, latest-esr/, latest/)

  • Firefox will not load error msg: error platform version 7.0.1 is not compatible with minVersion =7.0 maxVersion 7.0

    The above question. Firefox will not load. During firefox update, I stopped it and now when I click on the firefox icon, I get the above error msg

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

  • 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/

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