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!

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 firefox keeps reseting every time i close it all options i changed on it get reset to defaults why? is it some kind of error? im using windows xp

more options

well anytime i use firefox i watch some youtube vids watch stuff on jtv maybe even play some runescape then after i exit out of firefox every thing resets to defaults and i dont know why it does this i have scaned my comp with anti virus/malware/spyware and nothing appeared

well anytime i use firefox i watch some youtube vids watch stuff on jtv maybe even play some runescape then after i exit out of firefox every thing resets to defaults and i dont know why it does this i have scaned my comp with anti virus/malware/spyware and nothing appeared

Chosen solution

Do these steps help?

  • Rename the *prefs.js files in profile folder to *prefs_2.js (to backup, but Firefox wouldn't be able to see them);
  • Exit Firefox via File - Quit menu;
  • Launch Firefox again, check for the issue.
Read this answer in context 👍 4

All Replies (5)

more options
more options

ok i did all it said that i had to do and it still resets anything else that could help?

more options

Chosen Solution

Do these steps help?

  • Rename the *prefs.js files in profile folder to *prefs_2.js (to backup, but Firefox wouldn't be able to see them);
  • Exit Firefox via File - Quit menu;
  • Launch Firefox again, check for the issue.
more options

ok my problem is solved since i couldnt do anything with the corrupt prefs file (i couldnt even delete it for some reason) i just uninstalled and reinstalled fire fox but yeah thx for your help anyways pplz

more options

Well,I tried the above solution,it solved the problem but restart firefox n problem's back, earlier it doesn't changed even for current session.So,I am where I started.