X
Tap here to go to the mobile version of the site.

Support Forum

I've upgraded to 6.0.1 and now firefox no longer loades AT ALL. I get this XULRunner error: Platform version "5.0" not compatable with minVersion >= 6.0.1 and maxVersion <= 6.0.1. What can I do to get Firefox working again as my browser?

Posted

After deleting everything, I've also tried to reload 3.6.12 fresh and I get a totally different nss3.dll entry point cannot be found error.

After deleting everything, I've also tried to reload 3.6.12 fresh and I get a totally different nss3.dll entry point cannot be found error.

Additional System Details

Installed Plug-ins

Really can't remember aside from newly installed "xmarks" that I don't use cause it's a "log into" program. I run Zonealarm security ( and haven't had any conflicts for years yet ), Malwarebytes, System Mech, and occasionally Ad-aware and Spybot programs too. Nothing has shut down firefox like this before. Any ideas anybody...?

Application

  • User Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)

More Information

AliceWyman
  • Moderator
240 solutions 2593 answers

Chosen Solution

Maybe one of these articles will help? * http://kb.mozillazine.org/Browser_will_not_start_up#XULRunner_error_after_an_update *[[Firefox will not start]]

Modified by AliceWyman

cor-el
  • Top 10 Contributor
  • Moderator
17418 solutions 157372 answers

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.

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

Question owner

TY AliceWyman,

The article on "XULRunner error after update" gave me the answer. Playing around w/ some of the solutions posed in the article brought me to the solution. My ZA Internet Security "Clear Virtualization" setting was what was stopping Firefox from starting.

Thank You again, Bovax  :)

TY AliceWyman, The article on "XULRunner error after update" gave me the answer. Playing around w/ some of the solutions posed in the article brought me to the solution. My ZA Internet Security "Clear Virtualization" setting was what was stopping Firefox from starting. Thank You again, Bovax :)
AliceWyman
  • Moderator
240 solutions 2593 answers

Hey, that's great! Thanks for posting back.

Hey, that's great! Thanks for posting back.
Barry-Mansfield 0 solutions 1 answers

Thanks for that info it cured the problem for me.

Thanks for that info it cured the problem for me.