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Firefox Web Browser 78.7.1esr that will soon not support signing in to the Firefox account

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  • Last reply by James

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Hello and thank you for your help will my question. I'm using the Firefox Browser 78.7.1esr on my laptop with LinuxMint 17.3 installed. This version of Firefox is the most up to date allowed with my current operating system. Everything is working fine. The laptop sits on my desk at home, connected to a secure internet server. I do all my work online and everything has been working great.

Now I receive messages from Mozilla regarding older Firefox Browser versions, including the 78.1.7esr that will no long support signing in to Firefox or the syncing function. I've never used the sync option, however I totally depend on being able to access the Firefox Browser multiple times each day.

If I am understanding this correctly, after March 31, 2024 I will be effectively locked out of my Firefox Browser installation. Is this true? Do I have any other options beyond an update (which is impossible on my current laptop). Any other ideas?

I assume I need to move to a completely new web browser of some sort, although Firefox is great. Anything you can offer by way of ideas or help is greatly appreciated. Thank you for your time.

Eleanor Kittelson

Hello and thank you for your help will my question. I'm using the Firefox Browser 78.7.1esr on my laptop with LinuxMint 17.3 installed. This version of Firefox is the most up to date allowed with my current operating system. Everything is working fine. The laptop sits on my desk at home, connected to a secure internet server. I do all my work online and everything has been working great. Now I receive messages from Mozilla regarding older Firefox Browser versions, including the 78.1.7esr that will no long support signing in to Firefox or the syncing function. I've never used the sync option, however I totally depend on being able to access the Firefox Browser multiple times each day. If I am understanding this correctly, after March 31, 2024 I will be effectively locked out of my Firefox Browser installation. Is this true? Do I have any other options beyond an update (which is impossible on my current laptop). Any other ideas? I assume I need to move to a completely new web browser of some sort, although Firefox is great. Anything you can offer by way of ideas or help is greatly appreciated. Thank you for your time. Eleanor Kittelson

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Hi, you can continue using this version, only the sync option is going to be disabled. Everything else stays as it was.

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You can verify that you meet the System Requirements (GTK+ and GLib) for the current Firefox release.

You can find the full installer of the current Firefox release (123.0) in all languages and all operating systems here:

All Firefox releases on the Mozilla server:

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EBKittelson said

Hello and thank you for your help will my question. I'm using the Firefox Browser 78.7.1esr on my laptop with LinuxMint 17.3 installed. This version of Firefox is the most up to date allowed with my current operating system. Now I receive messages from Mozilla regarding older Firefox Browser versions, including the 78.1.7esr that will no long support signing in to Firefox or the syncing function. I've never used the sync option, however I totally depend on being able to access the Firefox Browser multiple times each day. If I am understanding this correctly, after March 31, 2024 I will be effectively locked out of my Firefox Browser installation. Is this true? Do I have any other options beyond an update (which is impossible on my current laptop). Any other ideas?

Well Linux Mint 17.3 is from Dec 2015 so no surprise if there is no more packages support as to why there has been no more package updates from Mint (including for Firefox) since.

No you did not understand correctly. The email was to inform you that the Sync feature will not be supported in Fx 78 and earlier as Sync will only support Firefox 79.0 and later including the current 123.0 and 115 ESR Releases.

The old EOL Firefox 78.7.1.0esr (from February 5, 2021) will still work fine though some web sites may not display properly or insist you update to a more current version as time goes on, plus you will potentially be vulnerable to vulnerabilities that re fixed in newer versions/updates. Btw the Fx 78.15.0esr was the last update for the old Fx 78 ESR.

What is Sync https://support.mozilla.org/en-US/kb/sync

Modified by James

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