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

Threat detected in version 34 download. rootkit.

  • 2 cavab
  • 2 have this problem
  • 1 view
  • Last reply by James

more options

antivirus has detected a threat in version 34 download dealing with a rootkit. cannot download with this threat as it could infect my computer. check your download of version 34.

antivirus has detected a threat in version 34 download dealing with a rootkit. cannot download with this threat as it could infect my computer. check your download of version 34.

All Replies (2)

more options

Are you downloading Firefox from the official mozilla.org source? If so, it does not have a rootkit, this is likely a false positive by your anti-virus (it happens from time to time).

If you are concerned, please scan for malware using the tools at Troubleshoot Firefox issues caused by malware

more options

Some antivirus clients are still occasionally flagging the stub installer for something ever since they existed since Firefox 18.0 release yet have no issues with the full setup. Never been proven that any Release for Windows is indeed infected with whatever was claimed.

Full setup can be found at https://www.mozilla.org/firefox/all/

Modified by James