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Update made all history and passwords disappear. How to undo?

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So a while back, like many people, I encountered the issue where I downloaded the cutting-edge Firefox in an attempt to get my extensions back during the failure. Then I realized that none of my stuff carried over, and I panicked to re-install the original to get my stuff back.

(To clarify, "stuff" encompasses history, previous sessions, cookies, saved login credentials, and the like. My sessions are...quite large, admittedly, so I crash often.)

So tonight, it crashed again while I was trying to respond to someone on a chat client. I hit restore previous session as normal. Then the update window showed. No harm done there.

Except then it gave me the dead basic, on-install new tab screen. Checking revealed no history, no cookies or password retained, and an inability to rez my previous session.

As a uni student during summer with a lot to book, this is a major issue.

And while I have attempted to look for Old Firefox Files, they remain elusive.


Fair to note: I use Windows 10 on a bone-average Lenovo laptop.

So a while back, like many people, I encountered the issue where I downloaded the cutting-edge Firefox in an attempt to get my extensions back during the failure. Then I realized that none of my stuff carried over, and I panicked to re-install the original to get my stuff back. (To clarify, "stuff" encompasses history, previous sessions, cookies, saved login credentials, and the like. My sessions are...quite large, admittedly, so I crash often.) So tonight, it crashed again while I was trying to respond to someone on a chat client. I hit restore previous session as normal. Then the update window showed. No harm done there. Except then it gave me the dead basic, on-install new tab screen. Checking revealed no history, no cookies or password retained, and an inability to rez my previous session. As a uni student during summer with a lot to book, this is a major issue. And while I have attempted to look for Old Firefox Files, they remain elusive. Fair to note: I use Windows 10 on a bone-average Lenovo laptop.
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Additional System Details

Installed Plug-ins

uBlock Origin

(before the big incident)

Application

  • User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.140 Safari/537.36 Edge/18.17763

More Information

FredMcD
  • Top 10 Contributor
4259 solutions 59635 answers
Look on your desktop. Do you see a folder called; '''Old Firefox?''' Look inside. Look for the folder with the latest creation date. https://support.mozilla.org/en-US/kb/recovering-important-data-from-an-old-profile https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles https://support.mozilla.org/en-US/kb/how-run-firefox-when-profile-missing-inaccessible
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jscher2000
  • Top 10 Contributor
8773 solutions 71727 answers

Helpful Reply

Hi Arrowtie, sorry to hear about this problem. When you say --

So tonight, it crashed again while I was trying to respond to someone on a chat client. I hit restore previous session as normal. Then the update window showed. No harm done there. Except then it gave me the dead basic, on-install new tab screen.

What are the "before" and "after" versions? Or in other words, how big a leap was it from what you used before to what you use now?

Profile Manager Page

Inside Firefox, type or paste about:profiles in the address bar and press Enter/Return to load it.

This page should list one or more profiles. Firefox 67 often creates one named default-release while the older one(s) might be named default or a variation on the word default.

Each profile has one or more buttons at the bottom: please do not use Rename or Remove to avoid further problems.

Can you find a "Set as default profile" button for your previous profile? After setting that, you can exit Firefox and start it up again.

Was that the issue?

Hi Arrowtie, sorry to hear about this problem. When you say -- <blockquote> So tonight, it crashed again while I was trying to respond to someone on a chat client. I hit restore previous session as normal. '''Then the update window showed.''' No harm done there. Except then it gave me the dead basic, on-install new tab screen. </blockquote> What are the "before" and "after" versions? Or in other words, how big a leap was it from what you used before to what you use now? '''Profile Manager Page''' Inside Firefox, type or paste '''about:profiles''' in the address bar and press Enter/Return to load it. This page should list one or more profiles. Firefox 67 often creates one named '''default-release''' while the older one(s) might be named '''default''' or a variation on the word default. ''Each profile has one or more buttons at the bottom: please do'' '''not''' ''use Rename or Remove to avoid further problems.'' Can you find a "Set as default profile" button for your previous profile? After setting that, you can exit Firefox and start it up again. Was that the issue?
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Question owner

I put off checking back or even using my laptop much for fear it had all been wiped away.

But God, that about:profiles. jscher2000, you're a lifesaver.

It's exactly the amount of a mess it was before, of course, but everything is here.

Including Piskel.


http://prntscr.com/nunhj3

I put off checking back or even using my laptop much for fear it had all been wiped away. But God, that about:profiles. jscher2000, you're a lifesaver. It's exactly the amount of a mess it was before, of course, but everything is here. Including Piskel. http://prntscr.com/nunhj3
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FredMcD
  • Top 10 Contributor
4259 solutions 59635 answers

Back up and restore information in Firefox profiles.{web link} I use an add-on that makes backups of my user profile, Just In Case. Unfortunately, it is not compatible with the current Firefox.

Every now and then, open the profile folder and create a copy of the current profile as is to another location on your hard drive. This way you will have a backup.

If you do this each day, you will not lose much data. This should be done with Firefox Closed.

Note: In case you need to restore from these backups, you may need to overwrite old or corrupted files.

[[Back up and restore information in Firefox profiles]].{web link} I use an add-on that makes backups of my user profile, Just In Case. Unfortunately, it is not compatible with the current Firefox. Every now and then, open the profile folder and create a '''copy''' of the current profile '''as is''' to another location on your hard drive. This way you will have a backup. If you do this each day, you will not lose much data. This should be done with '''Firefox Closed. ''' Note: In case you need to restore from these backups, you may need to overwrite old or corrupted files.
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