On Aug 14th 11 PM ET/Aug 15th 03:00 UTC, due to scheduled Firefox Account server maintenance, users may not be able to sign in or create a new subscription. This is expected to last approximately 30 minutes. Status updates can be found at https://status.vpn.mozilla.org or https://status.relay.firefox.com.

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 old laptop cannot be updated, has old versions of everything. I just got a new one, installed Firefox and Sync, but can new and old co-exist in Sync?

  • 6 replies
  • 1 has this problem
  • 3 views
  • Last reply by physicsmum

more options

I have two MacBooks, an old "Pro" and a new "Air". The old one has outdated operating system and Firefox, and cannot be updated. I just installed Firefox on my brand new laptop, and followed the instructions to "Sync". It seems to have worked, but I worry about the two versions of Firefox, and if they can co-exist like this. Will my new laptop keep the new version, and keep updating it? Should I have these two laptops in Sync at all??

I have two MacBooks, an old "Pro" and a new "Air". The old one has outdated operating system and Firefox, and cannot be updated. I just installed Firefox on my brand new laptop, and followed the instructions to "Sync". It seems to have worked, but I worry about the two versions of Firefox, and if they can co-exist like this. Will my new laptop keep the new version, and keep updating it? Should I have these two laptops in Sync at all??

Chosen solution

Hi physicsmum, did you already Sync successfully, and get your bookmarks and saved passwords from your old Firefox into your new Firefox? If so, you can disconnect your new Firefox from Sync now and be independent.

That may be for the best because they likely will run different add-ons and have different settings due to the different Firefox versions (maybe 48 vs. 60?).

You can disconnect from Sync on the Preferences page, Firefox Account category.

  • Mac: "3-bar" menu button (or Firefox menu) > Preferences
  • Windows: "3-bar" menu button (or Tools menu) > Options
  • Linux: "3-bar" menu button (or Edit menu) > Preferences
  • Any system: type or paste about:preferences into the address bar and press Enter/Return to load it

In the left column, click Firefox Account. Then, on the right side, look for Disconnect.

Read this answer in context 👍 0

All Replies (6)

more options
more options

Perhaps it was a mistake to start Sync immediately? I don't have much experience, and followed the on-screen suggestions too readily.

more options

I appreciate your response, but I still don't know if I should have these two computers in Sync or not. I am tending toward the negative!

more options

What Mac OS X version do you have on your old computer and which Firefox version is installed?

more options

Chosen Solution

Hi physicsmum, did you already Sync successfully, and get your bookmarks and saved passwords from your old Firefox into your new Firefox? If so, you can disconnect your new Firefox from Sync now and be independent.

That may be for the best because they likely will run different add-ons and have different settings due to the different Firefox versions (maybe 48 vs. 60?).

You can disconnect from Sync on the Preferences page, Firefox Account category.

  • Mac: "3-bar" menu button (or Firefox menu) > Preferences
  • Windows: "3-bar" menu button (or Tools menu) > Options
  • Linux: "3-bar" menu button (or Edit menu) > Preferences
  • Any system: type or paste about:preferences into the address bar and press Enter/Return to load it

In the left column, click Firefox Account. Then, on the right side, look for Disconnect.

more options

The old Firefox is 48.0.2 and the new one is 60.0.1 The old Mac system is OS X 10.6.8 and the new one is OS High Sierra etc.

Disconnecting from Sync sounds like a good idea, thanks!