Hi wilts43, the list of pinned sites is stored in a file named prefs.js in your profile folder. After a refresh, you will get a new prefs.js so Firefox will not have your pinned sites list.

After the Refresh, you can go into a new folder called Old Firefox Data on your desktop and find prefs.js and do some copy/pasting to recover your list. This thread involved that scenario:

https://support.mozilla.org/questions/1251805

wilts43 said

My Firefox is slow to open. And I get a message "Refresh Firefox".

Does FF open a lot faster when you Restart With Add-ons Disabled? (Under Main Menu > Help.)

List all your Extensions, Active and Inactive.

~Pj

jscher2000 said

Hi wilts43, the list of pinned sites is stored in a file named prefs.js in your profile folder. After a refresh, you will get a new prefs.js so Firefox will not have your pinned sites list. After the Refresh, you can go into a new folder called Old Firefox Data on your desktop and find prefs.js and do some copy/pasting to recover your list. This thread involved that scenario: https://support.mozilla.org/questions/1251805

What exactly do I copy, & where do I paste it....please?

wilts43 said

jscher2000 said

Hi wilts43, the list of pinned sites is stored in a file named prefs.js in your profile folder. After a refresh, you will get a new prefs.js so Firefox will not have your pinned sites list. After the Refresh, you can go into a new folder called Old Firefox Data on your desktop and find prefs.js and do some copy/pasting to recover your list. This thread involved that scenario: https://support.mozilla.org/questions/1251805

What exactly do I copy, & where do I paste it....please?

Could you use the solution in the other thread, or do I really need to paste it here?