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I get Error: Platform version '5.0' is not compatiblewith min Version>=6.0 max Version<=6.0, I have uninstalled and reinstalled twice how do I fix this?

Bob Culbertson
Bob Culbertson
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I have completed a factory system restore. After doing a complete factory reinstall the FF updater is not installing the latest updates.

I get this error message:

Error: Platform version '5.0' is not compatible with minVersion>=6.0 maxVersion<=6.0.

I have completed these steps:


Make a Backup of your Firefox Profile folder in some other location http://kb.mozillazine.org/Profile_folder_-_Firefox#Navigating_to_the_profile_folder Completely Uninstall Firefox https://support.mozilla.com/en-US/kb/Uninstalling%20Firefox http://kb.mozillazine.org/Uninstalling_Firefox SELECT TO REMOVE USER DATA AND SETTINGS Download latest Firefox version from one of these links: http://www.mozilla.com/en-US/firefox/new/ http://www.mozilla.com/en-US/firefox/central/ http://www.mozilla.com/en-US/firefox/fx/ http://www.mozilla.com/en-US/firefox/all.html Installing Firefox https://support.mozilla.com/en-US/kb/Installing%20Firefox%20on%20Windows http://kb.mozillazine.org/Installing_Firefox Manually Restore the Backed-up Firefox Profile http://kb.mozillazine.org/Profile_backup#Manually_restore_the_profile

I have completed a factory system restore. After doing a complete factory reinstall the FF updater is not installing the latest updates. I get this error message: Error: Platform version '5.0' is not compatible with minVersion>=6.0 maxVersion<=6.0. I have completed these steps: Make a Backup of your Firefox Profile folder in some other location http://kb.mozillazine.org/Profile_folder_-_Firefox#Navigating_to_the_profile_folder Completely Uninstall Firefox https://support.mozilla.com/en-US/kb/Uninstalling%20Firefox http://kb.mozillazine.org/Uninstalling_Firefox SELECT TO REMOVE USER DATA AND SETTINGS Download latest Firefox version from one of these links: http://www.mozilla.com/en-US/firefox/new/ http://www.mozilla.com/en-US/firefox/central/ http://www.mozilla.com/en-US/firefox/fx/ http://www.mozilla.com/en-US/firefox/all.html Installing Firefox https://support.mozilla.com/en-US/kb/Installing%20Firefox%20on%20Windows http://kb.mozillazine.org/Installing_Firefox Manually Restore the Backed-up Firefox Profile http://kb.mozillazine.org/Profile_backup#Manually_restore_the_profile

Alle antwurden (6)

cor-el
cor-el
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The updater wasn't able to update all the files and some were left as older versions. Do a clean reinstall. If there are problems with updating then best is to download the full version and uninstall the currently installed version.

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.

Bob Culbertson
Bob Culbertson Fraacheigener
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I completed the steps as you suggested and still get the same error message. Also, why am I still getting this error on a brand new computer?

I think there is a problem with FF that no one wants to correct. I had this same problem with FF version 5.0.

Also if I run FF as administrator it works fine but it is no longer my default browser. I refuse to use Internet Explorer and I don't want to use 2 or 3 different browsers because you don't have a fix for the problem.

Bewurke troch Bob Culbertson op

cor-el
cor-el
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You did delete the Firefox program folder (C:\Program Files\Mozilla Firefox\) ?

Are there any files in the VirtualStore folder? 

C:\Users\<user>\AppData\Local\VirtualStore\Program Files\Mozilla Firefox

The "Application Data" folder in XP/Win2K and the "AppData" folder in Vista/Windows 7 are hidden folders.

Bob Culbertson
Bob Culbertson Fraacheigener
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Yes I did delete the Firefox program folder (C:\Program Files\Mozilla Firefox\).

there are no files in the VirtualStore folder.

thanks Bob

cor-el
cor-el
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Are you using ZoneAlarm Extreme?

I've seen a few posts that ZA is causing problems like you described and in that case you need to do a clean reinstall and delete the Firefox program folder (C:\Program Files\Mozilla Firefox\) and install a newly downloaded copy of Firefox. Disable ZA before installing the new copy of Firefox.

Bob Culbertson
Bob Culbertson Fraacheigener
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I do use ZA Extreme Security.

I completely deleted the Firefox Folder ((C:\Program Files\Mozilla Firefox\).

I downloaded a fresh new copy of Firefox and saved it to my desktop.

I disabled ZA Extreme Security and installed FF, which opened and worked properly until I reacted ZA and I got the same error message, (Error: Platform version '5.0' is not compatiblewith min Version>=6.0 max Version<=6.0). I surely cannot browse the Internet without any security and I have 6 months left before my ZA is due for reinstatement.

Based on what I have read about in this forum there is no security system that is compatible with any version of FF.