¡Hola!

42.0 is the latest release of Firefox from Mozilla, see https://www.mozilla.org/en-US/firefox/42.0/releasenotes/

If you've been tricked by a bogus update, you can try these free programs to scan for malware, which work with your existing antivirus software:

• Microsoft Safety Scanner
• MalwareBytes' Anti-Malware
• Anti-Rootkit Utility - TDSSKiller
• AdwCleaner (for more info, see this alternate AdwCleaner download page)
• Hitman Pro
• ESET Online Scanner

Microsoft Security Essentials is a good permanent antivirus for Windows 7/Vista/XP if you don't already have one. Windows 8 has antivirus built-in already.

Further information can be found in the Troubleshoot Firefox issues caused by malware article.

Did this fix your problems? Please report back to us!

We're sorry to hear that Firefox is crashing. In order to assist you better, please follow the steps below to provide us crash IDs to help us learn more about your crash.

1. Enter about:crashes in the Firefox address bar and press Enter. A Submitted Crash Reports list will appear, similar to the one shown below.
2. Copy the 5 most recent Report IDs that start with bp- and then go back to your forum question and paste those IDs into the "Post a Reply" box.

Note: If a recent Report ID does not start with bp- click on it to submit the report.

(Please don't take a screenshot of your crashes, just copy and paste the IDs. The below image is just an example of what your Firefox screen should look like.)

Thank you for your help!

More information and further troubleshooting steps can be found in the Troubleshoot Firefox crashes (closing or quitting unexpectedly) article.

sense222 said

I tried several times to download this patch and it wouldn't work. I later saw a comment on this that it was not really Firefox sending this patch but a hacker. Is this correct? This, plus my daily crashes on Firefox. PLEASE HELP, Thanks.

If this was a .exe file then it was fake as lately these Firefox update.exe's been popping up on some sites as a way to infect less experienced Windows users.

Firefox updates are not done by way of a ,exe since it is not just for Windows but also Mac OSX and Linux. Updates are done in Firefox itself or by download from https://www.mozilla.org

alex_mayorga said

We're sorry to hear that Firefox is crashing.

There was no mention of crashes in subject or post.

I read somewhere that my Norton virus protection is not compatible with Mozilla Firefox, so hence the daily crashes. Thanks.