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.

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.

Cannot install latest firefox on windows 10

  • 4 replies
  • 0 have this problem
  • 4 views
  • Last reply by WestEnd

bservies
bservies
more options

With a newly reset Windows 10 on my laptop, firefox tells me it has been installed before. Well, no, but Ok.

Then, it fails to install with, "For some reason we cannot install firefox." Well, golly gee wilickers that's informative.

Click OK to try again. Doesn't try again, goes to a download area. Download file and run it, "Corrupt file!"

I've tried turning off the firewall, turning off smartscreen, updating windows, clearing all the caches. Nothin'.

Any suggestions before I go back to chrome and get some work done?

With a newly reset Windows 10 on my laptop, firefox tells me it has been installed before. Well, no, but Ok. Then, it fails to install with, "For some reason we cannot install firefox." Well, golly gee wilickers that's informative. Click OK to try again. Doesn't try again, goes to a download area. Download file and run it, "Corrupt file!" I've tried turning off the firewall, turning off smartscreen, updating windows, clearing all the caches. Nothin'. Any suggestions before I go back to chrome and get some work done?

All Replies (4)

WestEnd
WestEnd
more options

Boot into Safe Mode with F8 key and choose safe mode with networking and see if FF isn't already installed.

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

You can find the full version of the current Firefox release (61.0.1) in all languages and all operating systems here:

bservies
bservies Question owner
more options

Yes, thank you. Those are the files that SmartScreen flags and if I run them anyway (both the 32 and 64 bit versions) I get a "File Corrupt - Extraction Failed" dialog.

WestEnd
WestEnd
more options

bservies said

Yes, thank you. Those are the files that SmartScreen flags and if I run them anyway (both the 32 and 64 bit versions) I get a "File Corrupt - Extraction Failed" dialog.

That means the download was a failed download and you need to redownload again. Sounds like you got a over active security software causing the install issue.