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

Is there any way to disable the 'Check Now' button in tools>options>general>Always check to see if firefox is the default browser on startup?

  • 2 ŋuɖoɖowo
  • 2 masɔmasɔ sia le wosi
  • 1 view
  • Nuɖoɖo mlɔetɔ MehdiJohn

more options

Is there any way to disable the 'Check Now' button in tools>options>general>Always check to see if firefox is the default browser on startup?

I'm customizing a firefox distribution and want to remove any option to change the default browser to reduce future helpdesk calls as much as possible.

I've been able to disable and gray out the "Always check to see if Firefox is the default browser" option, but the check now button can still be manually clicked. Any idea if there's any file that can be modified to hide this button or gray it out?

Is there any way to disable the 'Check Now' button in tools>options>general>Always check to see if firefox is the default browser on startup? I'm customizing a firefox distribution and want to remove any option to change the default browser to reduce future helpdesk calls as much as possible. I've been able to disable and gray out the "Always check to see if Firefox is the default browser" option, but the check now button can still be manually clicked. Any idea if there's any file that can be modified to hide this button or gray it out?

All Replies (2)

more options

Use a mozilla.cfg file in the Firefox program folder to lock prefs or specify default values.

Place a file local-settings.js in the defaults\pref folder where you also find the file channel-prefs.js to specify using mozilla.cfg.

pref("general.config.filename", "mozilla.cfg");
pref("general.config.obscure_value", 0); // use this to disable the byte-shift

See:

You can use these functions in mozilla.cfg:

defaultPref();  // set new default value
pref();         // set pref, but allow changes in current session
lockPref();     // lock pref, disallow changes

  • lockPref("browser.shell.checkDefaultBrowser", false);
more options

The lockPref mentioned *only* unchecks and disables the checkbox. The *Check Now* button remains available, and still allows for the browser to be set as default through the popup dialog.