Hi Dave, Firefox shifted to a combined preview/setup experience similar to other programs. I assume she does get that preview when calling up print, but it's unsatisfactory or one reason or another?

No idea, she just likes the doc window in the older version (67.3). We were able to download the older version and it's running on her PC now. All(and I mean ALL) of her 410 tabs disappeared and I was surprised that there was no way that I could see to back them up. Very frustrating!!

Hi Dave, when you install an older version over a newer one, Firefox usually will tell you at startup that it needs to create a new profile. This is because older version often cannot process the newer files. I suspect that is the situation.

Did your wife get back her bookmarks and other data from Sync after signing into her Firefox Account? Sync isn't instant, so more data could appear over time. However, if other data needs to be recovered, please let us know.

For the missing tabs, I have an online tool to recover a list of them for reference. Here's how it works:

(1) In Firefox, open the Scrounger tool in a tab.

https://www.jeffersonscher.com/ffu/scrounger.html

(2) In a new tab, open the About Profiles page (type or paste about:profiles in the address bar and press Enter to load it)

(3) Find the old profile -- the current one will have this notation:

This is the profile in use and it cannot be deleted. That is your current default profile.

For the old one, find the "Root Directory" row and click Open Folder to launch a Windows File Explorer window.

In that window, look for a sessionstore.jsonlz4 file. If you don't find one, double-click into sessionstore-backups and you'll use the most recent file in here.

(4) In Firefox, switch back to the Scrounger tab, then drag-and-drop the session history file you want to decompress into the box in the page

Hopefully no errors... then

(5) Click the Scrounge URLs button

If you don't get a list within 15 seconds, that probably means the script is caught in a loop. You may need to close the tab to avoid a tab crash and then try again in a new tab.

If you get a useful list, use the "Save List" button to archive it as a web page of clickable links for future reference.