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.

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

Firefox Setup 7.0.exe won't open in XP-ProSP3; Why?

  • 1 reply
  • 24 have this problem
  • 12 views
  • Last reply by rstrong

more options

I have a fresh (reinstalled after formatting harddrive) XP-Pro installation with SP3. I started rebuilding my system after doing the system installations last night. I rebooted before running Setup 7.0. I have no other information but the error message that came up on the screen. It is:

Firefox Setup 7.0.exe is not a valid Win32 application.

I have a fresh (reinstalled after formatting harddrive) XP-Pro installation with SP3. I started rebuilding my system after doing the system installations last night. I rebooted before running Setup 7.0. I have no other information but the error message that came up on the screen. It is: Firefox Setup 7.0.exe is not a valid Win32 application.

All Replies (1)

more options

That error is displayed when the download is corrupt. You should be able to redownload to fix this and if that doesn't work empty the cache of the program you are using to download Firefox with before trying to download again.