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

My profs.js file is corrupted, but I can't delete it because it's corrupted. Anyway to fix this?

  • 3 replies
  • 9 have this problem
  • 2 views
  • Last reply by cor-el

more options

I am running Windows XP and Firefox 3.6...and have been, without problems for a while. Somehow my profs.js file got corrupted. The website says to delete the file, however, I can't because the file is corrupted.

I tried uninstalling Firefox and reinstalling it, but I get the same problem.

How can I get around this Catch 22?

I am running Windows XP and Firefox 3.6...and have been, without problems for a while. Somehow my profs.js file got corrupted. The website says to delete the file, however, I can't because the file is corrupted. I tried uninstalling Firefox and reinstalling it, but I get the same problem. How can I get around this Catch 22?

All Replies (3)

more options

Open the Windows Task Manager > Processes tab and make sure that there isn't a firefox.exe process that is "hanging" and not allowing Firefox to close completely.

If that still doesn't allow you to delete the prefs.js file, try deleting it after you re-boot your PC.

more options

That still didn't work, even after the reboot.

I ended up running chkdsk on the C drive and that finally got rid of the prefs.js file.

Thanks for the help.

more options

You can do a disk check with the chkdsk.exe program.

If you run the chkdsk.exe program from a cmd.exe Command window then you can read the response from the chkdsk.exe program.

Open a cmd.exe window:
Start > Run: cmd.exe <press Enter>

At the command prompt (>) type or Copy&Paste: chkdsk.exe /f /r <press Enter> (put a space before /f and /r)

If you get something like: Would you like to schedule this volume to be checked the next time the system restarts? y/n then answer the question with "Y" and close all programs and reboot the computer.