Kërkoni te Asistenca

Shmangni karremëzime gjoja asistence. S’do t’ju kërkojmë kurrë të bëni një thirrje apo të dërgoni tekst te një numër telefoni, apo të na jepni të dhëna personale. Ju lutemi, raportoni veprimtari të dyshimtë duke përdorur mundësinë “Raportoni Abuzim”.

Learn More

How do I get rid of Configuration Error dialog box stating, "Failed to read the configuration file. Please contact your system administrator."

more options

After a recent beta version installed, my profile seems to have a corrupt configuration file. But I don't know how to figure out which one. It only happens on my Windows 10 laptop. My profile syncs with another Windows 10 laptop, 2 user accounts on a Linux Mint desktop, and an LG phone. I followed the support article and changed the settings so that I was only on the release channel, rather than the Beta channel. I tried the Refresh Firefox. After resyncing my profile, the error returned. I uninstalled the newer Beta release, completely deleted the User/AppData/Roaming/Mozilla folder. I reinstalled the current release (72.0.2). After resyncing my profile, the error still returned. Every time I start Firefox, I get the annoyance of the error dialog box. After clicking OK, Firefox opens and works perfectly fine. How do I find which file in my profile is causing the error on just one computer?

After a recent beta version installed, my profile seems to have a corrupt configuration file. But I don't know how to figure out which one. It only happens on my Windows 10 laptop. My profile syncs with another Windows 10 laptop, 2 user accounts on a Linux Mint desktop, and an LG phone. I followed the support article and changed the settings so that I was only on the release channel, rather than the Beta channel. I tried the Refresh Firefox. After resyncing my profile, the error returned. I uninstalled the newer Beta release, completely deleted the User/AppData/Roaming/Mozilla folder. I reinstalled the current release (72.0.2). After resyncing my profile, the error still returned. Every time I start Firefox, I get the annoyance of the error dialog box. After clicking OK, Firefox opens and works perfectly fine. How do I find which file in my profile is causing the error on just one computer?

Krejt Përgjigjet (1)

more options

Hi Jason, one of the things often included with Sync are add-ons. So with that in mind:

Could you test in Firefox's Safe Mode? In its Safe Mode, Firefox temporarily deactivates extensions, hardware acceleration, any userChrome.css/userContent.css files, and some other advanced features to help you assess whether these are causing the problem.

If Firefox is not running: Hold down the Shift key when starting Firefox. (On Mac, hold down the option/alt key instead of the Shift key.)

If Firefox is running: You can restart Firefox in Safe Mode using either:

  • "3-bar" menu button > "?" Help button > Restart with Add-ons Disabled
  • (menu bar) Help menu > Restart with Add-ons Disabled

and OK the restart.

Both scenarios: A small dialog should appear. Click "Start in Safe Mode" (not Refresh).

Any improvement?


That error message also can arise when there is a problem with a local configuration file, although I am not aware that Sync could copy it over. To investigate:

Check for alien script files in your Firefox program folder as follows. Those are nearly always in one of these locations (varies for 32-bit / 64-bit):

  • C:\Program Files\Mozilla Firefox\defaults\pref
  • C:\Program Files (x86)\Mozilla Firefox\defaults\pref

Caution: Do not double-click script files! The default action for a script file it to execute as a Windows system script. (Typically this would just not work, but why risk it.)

Make sure Windows is showing hidden files: https://support.microsoft.com/en-us/help/14201/windows-show-hidden-files

It's also a good idea to turn on display of all file extensions: https://www.bleepingcomputer.com/tutorials/how-to-show-file-extensions-in-windows/

A file named channel-prefs.js is normal. Any other file in this folder is suspicious and could be used to modify Firefox behavior. Remove any such files to a neutral location for further analysis at your leisure. You can rename the file with a .txt extension and examine it for the name of another file that contains the locking code.