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 recently had an update to firefox and now cannot use it at all. Apparently a 'bad image' not valid Windows image. Help.

  • 1 reply
  • 3 have this problem
  • 6 views
  • Last reply by Xircal

millyjackdaw
millyjackdaw
more options

I recently had an update to my Firefox account and since then cannot use it at all. When I try to a window opens which says the following:


The application or DLL C:/Program Files/Mozilla/Firefox/xul.dll is not a valid Windows image. Please check your installation diskette.

I recently had an update to my Firefox account and since then cannot use it at all. When I try to a window opens which says the following: The application or DLL C:/Program Files/Mozilla/Firefox/xul.dll is not a valid Windows image. Please check your installation diskette.

All Replies (1)

Xircal
Xircal
more options

Please do the following.

Go to Download Firefox v3.6.17 and download it to the desktop.

Then go to Add/Remove Programs, scroll down to Mozilla Firefox and remove it, choosing to keep your bookmarks, customizations etc., (don't checkmark the box).

Then reboot and delete the folder called Mozilla Firefox at this location: C:\Program Files\Mozilla Firefox

Finally run the installation file you downloaded to the desktop earlier.

Your bookmarks, customizations etc., are maintained in a different location and will become available to you again once you complete the installation.

This is what's known as a 'clean install'. It will overwrite the corrupt files which are preventing Firefox from starting.