This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

I upgraded to V.30 from V.29. Now Firefox is NOT working, WHY?

  • 1 reply
  • 9 have this problem
  • 1 view
  • Last reply by cor-el

TbillW
TbillW
more options

On my desktop (Gateway All In One/Windows 7), I was attempting to upgrade Firefox V.29 to V.30. After restarting I received this message......"The version of this file is not compatible with the version of windows you're running. Check your computers system information to see whether you need an x86 (32-bit) or x64 (64-bit) version of the program, and then contact the software publisher". I am running Windows 7, 64 Bit. I am sending this message from my Laptop (because the browser on the desktop WILL NOT come up) running Windows 7, 64 Bit and Firefox V.29. It has already tried to upgrade to V.30. I did not upgrade to V.30.

On my desktop (Gateway All In One/Windows 7), I was attempting to upgrade Firefox V.29 to V.30. After restarting I received this message......"The version of this file is not compatible with the version of windows you're running. Check your computers system information to see whether you need an x86 (32-bit) or x64 (64-bit) version of the program, and then contact the software publisher". I am running Windows 7, 64 Bit. I am sending this message from my Laptop (because the browser on the desktop WILL NOT come up) running Windows 7, 64 Bit and Firefox V.29. It has already tried to upgrade to V.30. I did not upgrade to V.30.

All Replies (1)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Do a clean reinstall and delete the Firefox program before (re)installing a fresh copy of the current Firefox release.

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 this will remove all profile folders and you lose personal data like bookmarks and passwords including data in profiles created by other Firefox versions.

Remove the Firefox program 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\"

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.