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

Natao arisiva ity resaka mitohy ity. Mametraha fanontaniana azafady raha mila fanampiana.

Can't sync firefox custom preferences

  • 5 valiny
  • 1 manana an'ity olana ity
  • 13 views
  • Valiny farany nomen'i Prince Cooper

more options

I know there's [[an article|https://support.mozilla.org/en-US/kb/sync-custom-preferences#w_sync-custom-preferences]] on how to sync custom preferences. I wanted to sync my toolbar customizations and some other preferences like disabling disk caching. And I don't even have other firefox instances, instead I just want to sync only on one device, so that I can continue the same setup when I signin later on the same device.

I've tried to add services.sync.prefs.sync.browser.uiCustomization.state, "services.sync.prefs.sync.browser.cache.disk.enable" and set it to true. But it doesn't work. What am I missing? No one seems to address this. May I am missing something.

I know there's [[an article|https://support.mozilla.org/en-US/kb/sync-custom-preferences#w_sync-custom-preferences]] on how to sync custom preferences. I wanted to sync my toolbar customizations and some other preferences like disabling disk caching. And I don't even have other firefox instances, instead I just want to sync only on one device, so that I can continue the same setup when I signin later on the same device. I've tried to add ''services.sync.prefs.sync.browser.uiCustomization.state'', "services.sync.prefs.sync.browser.cache.disk.enable" and set it to true. But it doesn't work. What am I missing? No one seems to address this. May I am missing something.

Vahaolana nofidina

Paul said

WARNING from the moderator team: Changing Firefox pref from the about:config page can sometimes break Firefox or cause strange behavior. You should only do this if you know what you're doing. Please read Firefox Advanced Customization and Configuration Options to learn more.

Thank you for the warning. I know what I'm doing & I'm just experimenting on just one config whether it works or not. And it just won't sync no matter what I do. I'm surely missing something. I've even tried enabling dangerous_arbitary but that failed to sync too.

Atleast tell me where those custom prefs file inside profiles directory... I can't backup my whole profile caz it's too big. Edit: Okay, I've found that backing up & restoring <profile-dir>/prefs.js kinda brings back my older setup. I don't care if it's safe or not. This is the only working way for me right now.

Hamaky an'ity valiny ity @ sehatra 👍 0

All Replies (5)

more options

pcoop said

I've tried to add services.sync.prefs.sync.browser.uiCustomization.state,

Try services.sync.prefs.browser.uiCustomization.state instead.

more options

TyDraniu said

pcoop said

I've tried to add services.sync.prefs.sync.browser.uiCustomization.state,

Try services.sync.prefs.browser.uiCustomization.state instead.

Actually that extra sync was a typo. I had it correct, I just couldn't able to correct this post, as there wasn't an edit button...¯\_(ツ)_/¯ I've tried applying the config again, synced again & tested on a new profile. It still didn't work.

more options

Other forum moderators suggest one thing. And the moderator on this thread suggest another thing. https://support.mozilla.org/en-US/questions/1185771 https://support.mozilla.org/en-US/kb/sync-custom-preferences https://support.mozilla.org/bm/questions/1246892 https://support.mozilla.org/en-US/questions/1271303

Yes. I've read & tried all the above pages. I've tried all the below combinations services.sync.prefs.sync services.sync.prefs services.sync

None of them work. I've tried all the methods creating new profiles, syncing them, deleting them, creating again. I've sat on them for like hours. How does this exactly work ? I'm stoked btw.

Novain'i Prince Cooper t@

more options

WARNING from the moderator team: Changing Firefox pref from the about:config page can sometimes break Firefox or cause strange behavior. You should only do this if you know what you're doing.

Please read Firefox Advanced Customization and Configuration Options to learn more.

more options

Vahaolana Nofidina

Paul said

WARNING from the moderator team: Changing Firefox pref from the about:config page can sometimes break Firefox or cause strange behavior. You should only do this if you know what you're doing. Please read Firefox Advanced Customization and Configuration Options to learn more.

Thank you for the warning. I know what I'm doing & I'm just experimenting on just one config whether it works or not. And it just won't sync no matter what I do. I'm surely missing something. I've even tried enabling dangerous_arbitary but that failed to sync too.

Atleast tell me where those custom prefs file inside profiles directory... I can't backup my whole profile caz it's too big. Edit: Okay, I've found that backing up & restoring <profile-dir>/prefs.js kinda brings back my older setup. I don't care if it's safe or not. This is the only working way for me right now.

Novain'i Prince Cooper t@