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

How to prevent 3rd party applications from changing FF settings (e.g. homepage)?

more options

On Windows 7 (Firefox 15 Beta) i cancelled installation of an unwanted application, but it changed the firefox homepage and added a search engine. How can i prevent this from happening in the future - is there a firefox setting or are this changes entirely managed by windows?

All Replies (3)

more options

For your current problem, you can use to revert these settings.

Unfortunately there isn't a real way to prevent this from happen. You can, when installing programs, make sure you read through every setting, and not install toolbars, search engines, etc. However, if the program is malicious they may not give you an options and will just install it anyway.

more options

If you need to restore the about:home page to its default then reset the browser.startup.homepage_override.mstone pref via the right-click context menu to the default on the about:config page and close and restart Firefox.

  1. Open the about:config page via the location bar
  2. Type in the Filter bar: mstone
  3. Right-click the browser.startup.homepage_override.mstone line and select: Reset
  4. Close and restart Firefox

If this didn't help then delete the delete the chromeappsstore.sqlite file in the Firefox Profile Folder and repeat the above.

You can use this button to go to the Firefox profile folder:

  • Help > Troubleshooting Information > Profile Directory: Open Containing Folder
more options

Thank guys for the advice. I already removed both the offending search engine (Manage Search Engines... > Remove) and homepage (Options > General > Home page) - i didn't want to restore them to default, i use custom searche engines and restore tabs from previous session.

I guess i need to keep on the protection from "potentially unwanted applications" in my antivirus settings and live with occasional false positives.

Modified by Peter Hozák