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

How do I restore Firefox to a previous state from Time Machine?

  • 1 reply
  • 1 has this problem
  • 881 views
  • Last reply by cor-el

more options

Somehow I managed to lose all of my windows, search history, addins, etc. It would appear that a new profile was created. I tried about:profiles and selecting the old profile (1.4GB) but while FIrefox starts, the places.sqlite file is now place.sqlite.corrupt. I followed the Mozilla instructions to try to fix the sqlite file but that did not help. I restored the full Firefox Application Support folder from Time Machine but that also starts with a fresh profile and selecting the old one gets me to a corrupt places.sqlite file. Given that I have TIme Machine backups, Is there no way to get back to a previous state with my windows, history, addins, etc. I am faced with losing a lot of work if I can't get back to where I was at least since a recent backup.

Thanks in advance for any assistance you can offer.

Somehow I managed to lose all of my windows, search history, addins, etc. It would appear that a new profile was created. I tried about:profiles and selecting the old profile (1.4GB) but while FIrefox starts, the places.sqlite file is now place.sqlite.corrupt. I followed the Mozilla instructions to try to fix the sqlite file but that did not help. I restored the full Firefox Application Support folder from Time Machine but that also starts with a fresh profile and selecting the old one gets me to a corrupt places.sqlite file. Given that I have TIme Machine backups, Is there no way to get back to a previous state with my windows, history, addins, etc. I am faced with losing a lot of work if I can't get back to where I was at least since a recent backup. Thanks in advance for any assistance you can offer.

Modified by irafuchs

Chosen solution

You can check the content of compatibility.ini in the profile Time Machine backup to see what Firefox version used this profile. If this is a profile from a very old Firefox version then the profile might not be compatible. You can try to restore a backup from the bookmarkbackups folder.

You can check if you have an "Old Firefox Data" folder on the desktop in case the Refresh feature in Firefox has been used and a new profile has been created.

See also:

Read this answer in context 👍 0

All Replies (1)

more options

Chosen Solution

You can check the content of compatibility.ini in the profile Time Machine backup to see what Firefox version used this profile. If this is a profile from a very old Firefox version then the profile might not be compatible. You can try to restore a backup from the bookmarkbackups folder.

You can check if you have an "Old Firefox Data" folder on the desktop in case the Refresh feature in Firefox has been used and a new profile has been created.

See also: