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When I try to set FF back to default, I get XUL Runner: v. 15.0.1... What should I do?

hikerpat

I'm running XP Pro. System has been running extremely slow; have tried other options but no success. Tried to set FF back to default, but I get the message: XUL Runner Error: Platform version "15.0.1" is not compatible w/minVersion >=12.0, maxVersion <=12.0. Is there anything I should be doing to get rid of this Error? I am not very computer literate, so please try simplicity in explanation. Thanks.

I'm running XP Pro. System has been running extremely slow; have tried other options but no success. Tried to set FF back to default, but I get the message: XUL Runner Error: Platform version "15.0.1" is not compatible w/minVersion >=12.0, maxVersion <=12.0. Is there anything I should be doing to get rid of this Error? I am not very computer literate, so please try simplicity in explanation. Thanks.

Krejt Përgjigjet (5)

hello hikerpat, this error might be caused by security programs such as zone alarm - please temporarily disable those programs and do a reinstall of the browser:

  • download the full firefox 15.0.1 setup file from getfirefox.com
  • uninstall firefox on the machine (but don't chose to delete your custom files & settings in the uninstaller)
  • manually delete all remaining files in the firefox program folder, which usually resides in C:\Program Files\Mozilla Firefox\
  • reinstall firefox

If you use ZoneAlarm Extreme Security then disable Virtualization and reinstall Firefox.
Other security software may have similar features to prevent Firefox from updating files properly.

See :

As you suggested: I temporarily disabled (for 1 hour) Avast 7. I used your link to download a new copy of FF. I tried 3 times to open it to run it, but nothing happened. But, and this a huge problem - I lost use of the computer for over an hour, as the screen went to a bright silvery black/green. It came back up when I did Control*Alt*Delete. This happens very often. Thankfully, Avast 7 came back up to do due diligence. I will try this again - when I have several hours to devote. Thanks.

Try to boot the computer in Windows Safe mode with network support (press F8 on the boot screen) as a test to see if that works.

I don't know what "network support" means. What I get is: USB HDD; CD-ROM; HP Diagnostics; <F2> Enter Setup; <ESC> Summary; <F12> Boot on Lan; <F10> Run HP Diagnostics. I don't know what any of that means or what any of it does. If any of it involves having an install disc, I don't have one.