X
Tap here to go to the mobile version of the site.

Support Forum

Firefox files used by onother application -- launch error

Posted

When opening Firefox, I receive a message stating "The bookmarks and history system will not be functional because one of Firefox's files is in use by another application. Some security software can cause this problem." This seems to have started with Firefox 70.0.1.

I have tried resolving this by creating another profile, and by removing Firefox completely and reinstalling it. The problem persists in all cases.

Firefox: 70.0.1 OS: Mac OS 10.15.1 Hardware: MacBook Pro 13" (2016)

When opening Firefox, I receive a message stating "The bookmarks and history system will not be functional because one of Firefox's files is in use by another application. Some security software can cause this problem." This seems to have started with Firefox 70.0.1. I have tried resolving this by creating another profile, and by removing Firefox completely and reinstalling it. The problem persists in all cases. Firefox: 70.0.1 OS: Mac OS 10.15.1 Hardware: MacBook Pro 13" (2016)
Attached screenshots
Quote

Additional System Details

Installed Plug-ins

Instapaper 1Password AdGuard Privacy Badger Enhancer for YouTube Multi-Account Containers

Application

  • User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:70.0) Gecko/20100101 Firefox/70.0

More Information

deepthapasan 0 solutions 8 answers

Helpful Reply

Hi , When this issue arises try opening up the task manger and close FF. Then deactivate virus guards that are active and try launching it again.This might fix the issue.


                          Thanks
Hi , When this issue arises try opening up the task manger and close FF. Then deactivate virus guards that are active and try launching it again.This might fix the issue. Thanks
Was this helpful to you? 1
Quote
cor-el
  • Top 10 Contributor
  • Moderator
17564 solutions 158866 answers

Helpful Reply

If you use Sync then best is to disconnect Sync temporarily during troubleshooting.

You can check for problems with the places.sqlite and favicons.sqlite files in the Firefox profile folder.

  • use "Verify Integrity" button on the "Help -> Troubleshooting Information" (about:support) page

In case errors are reported with "Verify Integrity" close and restart Firefox and retry.

If "Verify Integrity" cannot repair places.sqlite, rename/remove all places.sqlite and favicons.sqlite files in the Firefox profile folder. Firefox will rebuild places.sqlite and restore the bookmarks from a recent JSON backup in the bookmarkbackups folder.

  • keep a backup copy of places.sqlite in case a new places.sqlite database has to be created

See also:

You can use the button on the "Help -> Troubleshooting Information" (about:support) page to go to the current Firefox profile folder or use the about:profiles page.

If you use Sync then best is to disconnect Sync temporarily during troubleshooting. You can check for problems with the <b>places.sqlite</b> and <b>favicons.sqlite</b> files in the Firefox profile folder. *use "Verify Integrity" button on the "Help -> Troubleshooting Information" (about:support) page In case errors are reported with "Verify Integrity" close and restart Firefox and retry. If "Verify Integrity" cannot repair places.sqlite, rename/remove all <b>places.sqlite</b> and <b>favicons.sqlite</b> files in the Firefox profile folder. Firefox will rebuild places.sqlite and restore the bookmarks from a recent JSON backup in the bookmarkbackups folder. *keep a backup copy of places.sqlite in case a new places.sqlite database has to be created See also: *https://support.mozilla.org/en-US/kb/Bookmarks+not+saved#w_fix-the-bookmarks-file *https://support.mozilla.org/en-US/kb/fix-bookmarks-and-history-will-not-be-functional You can use the button on the "Help -> Troubleshooting Information" (about:support) page to go to the current Firefox profile folder or use the <b>about:profiles</b> page. *Help -> Troubleshooting Information -> Profile Directory:<br>Windows: Show Folder; Linux: Open Directory; Mac: Show in Finder *https://support.mozilla.org/en-US/kb/Profiles
Was this helpful to you? 1
Quote

Question owner

Thank you for the responses to my question.

Here's what seems to have fixed the problem, at least it's tot occurring at the moment. And unfortunately it doesn't point to a specific problem.

  1. Removed Firefox completely, searching for all Firefox or Mozilla related files and directories, and deleting them.
  2. Ran Disk Utility to check and repair and file system issues. (None were found.)
  3. Restarted the Mac.
  4. Reinstalled Firefox as if for the first time.
  5. Launched Firefox, and signed into my Firefox account to sync extensions and bookmarks.

The virus checker solution is interesting. If the problem reoccurs I will certainly try that.

I had tried to repair places.sqlite and favicons.sqlite, and rebulit them several times in an effort to solve this problem, but that never worked.

Thanks again for your suggestions.

Thank you for the responses to my question. Here's what seems to have fixed the problem, at least it's tot occurring at the moment. And unfortunately it doesn't point to a specific problem. # Removed Firefox completely, searching for ''all'' Firefox or Mozilla related files and directories, and deleting them. # Ran Disk Utility to check and repair and file system issues. (None were found.) # Restarted the Mac. # Reinstalled Firefox as if for the first time. # Launched Firefox, and signed into my Firefox account to sync extensions and bookmarks. The virus checker solution is interesting. If the problem reoccurs I will certainly try that. I had tried to repair places.sqlite and favicons.sqlite, and rebulit them several times in an effort to solve this problem, but that never worked. Thanks again for your suggestions.

Modified by cor-el

Was this helpful to you?
Quote
Ask a question

You must log in to your account to reply to posts. Please start a new question, if you do not have an account yet.