Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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

error message: libsmime3.dylib is in use and will not allow update

  • 2 balasan
  • 52 ada masalah ini
  • 7 paparan
  • Balasan terakhir oleh Cheng Wang

more options

I tried to download the new firefox 5.0, for Mac OS10

when I put it into the application folder the error message showed up:

libsmime3.dylib is in use and would not allow new version to replace old

I have restarted the computer several times and still the same

I tried to download the new firefox 5.0, for Mac OS10 when I put it into the application folder the error message showed up: libsmime3.dylib is in use and would not allow new version to replace old I have restarted the computer several times and still the same

All Replies (2)

more options

I was able to fix this by uninstalling the previous version:

1. Go to Applications folder (Shift-Cmd-A) 2. Delete Mozilla Firefox application (Cmd-delete) 3. Now drag Firefox 5 into Applications folder.

Good luck!

more options

I found this blog post when trying to look up that error. Looks like a common cause of the error is programs like Evernote, Dropbox or Cisco's AnyConnect VPN Client. Try disabling those (the blog post has instructions) if a simple delete/replace doesn't help.