Skip navigation
This discussion is archived

"Firefox" is an application which was downloaded from the internet....

25611 Views 15 Replies Latest reply: Apr 25, 2008 6:18 AM by Christian Theussl RSS
1 2 Previous Next
Poonaka Level 1 Level 1 (0 points)
Currently Being Moderated
Oct 27, 2007 4:43 AM
Every time I open Firefox I get this message:

"Firefox" is an application which was downloaded from the internet. Are you sure you want to open it? Safari downloaded this file today at....


How do I turn this off?
MacBook, Mac OS X (10.5)
  • iVmichael Level 6 Level 6 (13,725 points)
    It sounds like you're launching it from the original disc image (dmg file in Downloads folder) and haven't dragged the application to the Applications folder yet ...
    Assorted Mac's and PC's, 5th Gen 60GB iPod - OSX 10.5 WinXP RedHat -
  • FromOZ Level 2 Level 2 (400 points)
    This is new security feature (done properly compared to Vista) which will warn you about programs downloaded from Internet. Once you have expanded it (out of the .dmg as iVmichael says) and moved to your applications folder you should not get message anymore.
     Mac Pro, 2 x 2.66 GHz Dual-Core Intel Xeon, 2GB RAM, Mac OS X (10.5), AirPort Extreme (102.11n gbit ports)
  • FromOZ Level 2 Level 2 (400 points)
    I haven't personally tried it - yet - will give it a shot.
     Mac Pro, 2 x 2.66 GHz Dual-Core Intel Xeon, 2GB RAM, Mac OS X (10.5), AirPort Extreme (102.11n gbit ports)
  • Neil R Roberts Level 2 Level 2 (320 points)
    You are right, it OSX.5 should remember and it does. I am replying via Firefox right now and I did get the message albeit one time only. Did you upgrade or archive and install fresh?
    THis is important with regards to your write access.

    Find and check the access properties on the firefox profile. (What you say?!) Close Firefox - Click on your main hd, users/your name/ library/application support and remove the firefox folder from under the Application Support directory. Restart firefox.. that should do it.
    24" iMac 3 Gigs RAM - 256Megs VRAM, Mac OS X (10.4.10), Canopus DV Bridge lots of stuff hanging off.
  • simpleton42 Calculating status...
    to Neil: did NOT do the trick for me

    to all who try the trick: mind you that removing "userX/Library/Application Support/Firefox" you loose all your firefox settings

    to all the others: this is NOT firefox specific, in fact, I get it constantly for all sorts of applications.

    big frustrating, unsolved problem.
  • Frank van Meurs Calculating status...
    Ok, so... After found **** all on the Apple support site, in the developer documentation, etc, I turned to google and the man pages and came up with the following...

    The warnings are due to an extended attribute on the application directories, most likely set by Safari upon downloading the disc image. Usually, when a machine is a single-user machine or when the main user has admin rights, clicking away the warning would result in the extended attribute being unset (or something like that). However, when a user does not have sufficient rights to do so, the extended attribute can't be unset, resulting in the warning appearing over and over and over and over and ... (you get my idea).

    How to solve this:

    Option 1: *Give each user write permission in /Application*

    1. "Get info" on "Applications"
    2. Unlock the permissions panel (click the lock and type an admin user/pass)
    3. Grant "Everyone" "read & write"

    This, of course, is stupid. The obvious reason is that now anybody can write anything in /Applications. One way to circumvent this, is by granting individual users read & write permission. This, also, isn't very smart, but at the very least cumbersome when dealing with a few users. Furthermore, now you'll have defined an ACL an /Applications, which Disk Utility, when verifying permissions at some point will start nagging about, saying: "ACL found but not expected on 'Applications'."

    Option 2: *Remove the extended attributes and possible ACL's*

    1. Open the Terminal
    2. Switch to admin if not logged in as one (eg: "su admin")
    3. Change directory to /Applications (cd /Applications)
    4. Check which files have extended attributes (ls -lsa)

    The entries marked with an "@" have extended attributes (and ones with ACL's defined will be marked with a "+").

    5. List the attributes (xattr -l <FileOrDirectoryName>)
    6. Remove the "com.apple.quatantine" attribute if it is defined (xattr -d com.apple.quarantine <FileOrDirectoryName>)
    7. Recheck the attributes (see step 5)
    8. Rinse and repeat for all "downloaded applications" giving errors

    Should there be ACL's defined which were not supposed to be defined and which you want to remove:

    9. Check which ACL's are defined (ls -lsae)

    Each entry with an ACL defined will have them listed below the entry, arranged by number

    10. Remove ACL's, referring to each by number (sudo chmod -a# <ACL Number> <FileOrDirectoryName>)
    11. Recheck which ACL's are defined (see step 9)
    12. Rinse and repeat for each unwanted ACL
    13. Exit

    This should about fix all errors in Disk Utility and with quarantine warnings.
    Mac OS X (10.5)
  • simpleton42 Level 1 Level 1 (5 points)
    Frank: you totally rock!
    Option 1: find it a little scary (btw. when starting firefox I do so as a user with sysadmin rights and still have the problem)
    Option 2: GREAT!! that did it for me!
    THANKS.
  • Dale Weisshaar Level 6 Level 6 (15,855 points)
    Good call Frank!
     DALE
    Mac Pro 3.0 GHz Dual Core, 5 GB, X1900, 30"ACD, HP C7180 Printer,, Mac OS X (10.4.10), and a G4 450 Dual (Gigabit Ethernet), 1.62 MB, 10.4.10+9.2, Cannon i475 Printer
  • Trejkaz Calculating status...
    What I find laughable about this warning is that programs from "the Internet" are not actually any more dangerous than programs from anywhere else. The message should say "this program came from somewhere other than Apple", if it wants to be serious.

    Incidentally I've also seen this message appear on applications which were not downloaded from the Internet.
    MacBook Pro, Mac OS X (10.5)
  • Lawrence C Paulson Calculating status...
    I was getting this problem because I install applications using a dedicated admin account. There is a really simple solution.

    Every time you install a new version of an application, like FireFox, launch it immediately in your admin account, then click away the warning. Then you won't get the warning in user accounts.
    Power Mac G5, Mac OS X (10.4.9)
  • ianinIT Calculating status...
    Here is the solution I found. Put a copy of Firefox you have already installed successfully on another machine on a Flash drive. Overwrite the problem install of Firefox with the copy on the flash drive. Done. Worked great for me. I am guessing this works because that copy of Firefox was not downloaded on that machine.
    Macbook, Mac OS X (10.5.1)
1 2 Previous Next

Actions

More Like This

  • Retrieving data ...

Bookmarked By (0)

Legend

  • This solved my question - 10 points
  • This helped me - 5 points
This site contains user submitted content, comments and opinions and is for informational purposes only. Apple disclaims any and all liability for the acts, omissions and conduct of any third parties in connection with or related to your use of the site. All postings and use of the content on this site are subject to the Apple Support Communities Terms of Use.