We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

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

A critical fix just installed. But it did not behave like a normal update. It opened the command prompt, installed then just sat there. Was that a virus or FF?

  • 2 replies
  • 3 have this problem
  • 1 view
  • Last reply by DJT111

more options

A critical fix was just installed on my machine. The web page I was looking at was replaced completely by a FF page. Looked official but the notice was not how I am normally notified of an update, but then again it said it was urgent. Then the update itself did not install like a normal FF update. The update started, it opened the command prompt window, installed something and then just sat there saying the update was complete. I fear I downloaded a virus or malware to my machine that was disguised as a FF update since this is not how a normal FF update behaves. Also this is a new machine. I downloaded FF for the first time to this machine only a few days ago. So the question. Was this really FF or was it malware? Thanks.

A critical fix was just installed on my machine. The web page I was looking at was replaced completely by a FF page. Looked official but the notice was not how I am normally notified of an update, but then again it said it was urgent. Then the update itself did not install like a normal FF update. The update started, it opened the command prompt window, installed something and then just sat there saying the update was complete. I fear I downloaded a virus or malware to my machine that was disguised as a FF update since this is not how a normal FF update behaves. Also this is a new machine. I downloaded FF for the first time to this machine only a few days ago. So the question. Was this really FF or was it malware? Thanks.

Chosen solution

Hi

Yes, that sounds like you have been caught out by a fake Firefox update. Please see the article I found a fake Firefox update which also has some useful information about how to remove it.

This article explains how to make sure your copy of Firefox is up to date.

Read this answer in context 👍 2

All Replies (2)

more options

Chosen Solution

Hi

Yes, that sounds like you have been caught out by a fake Firefox update. Please see the article I found a fake Firefox update which also has some useful information about how to remove it.

This article explains how to make sure your copy of Firefox is up to date.

more options

Thank you. I'll check out the detailed instructions contained in your links. Your screen shot seems right on however.  :( Thanks again.