Other addons setting too from 1 year ago... GZ mozzilla!

"browser-extension-data" ws used in previous Firefox versions. Current releases use IndexedDB (storage\default) to store its data. Unfortunately this uses a UUID to store data and each time you install an extension you get a new UUID.

You would have to restore the specific folder in the "Old Firefox Data" folder on the desktop used by Tampermonkey and then make Tampermonkey use this folder. See also;

• /questions/1275126 Restore "one tab" data lost during refresh

Note that you probably can export and import scripts in Tampermonkey.

I don't have a "Old Firefox Data" folder with a tampermonkey data!!!!! You losing my trust... How can I retrieve a tampermonkey data?! TELL ME!!!!

Adblock data is empty too in "Old firefox data".

When I will lose this data i change a browser!!!

!REFRESH! c'mon! It's your fault!

You can possibly start Firefox with a direct path to the profile folder in the "Old Firefox Data" folder on the desktop to see if you can export data or use a copy/paste to retrieve data from various extensions. Leave a space before and after the "-profile" parameter

• firefox.exe -profile "full_profile_path"
• https://developer.mozilla.org/en-US/Command_Line_Options

cor-el said

You can possibly start Firefox with a direct path to the profile folder in the "Old Firefox Data" folder on the desktop to see if you can export data or use a copy/paste to retrieve data from various extensions. Leave a space before and after the "-profile" parameter

• firefox.exe -profile "full_profile_path"
• https://developer.mozilla.org/en-US/Command_Line_Options

I opened this profile. Adblock and tampermonkey "installed succesfull". The data is empty. No scripts no settings...

Thank you mozzila for the lost my time....

What a silent!

You are saying that you cannot even find the extension data in your old profile? You may have to manually investigate this to recover what you have. You might copy the profile elsewhere to work on, and maybe archive a backup copy just in case.

I am sorry for your trouble, and for your loss if you cannot restore your extensions settings.

I also wonder why there is not a link to the KB article next to the Refresh Firefox button, or at least a warning. https://support.mozilla.org/en-US/kb/refresh-firefox-reset-add-ons-and-settings

Important: Since Firefox will revert to its original state, your own configurations and customizations, including extensions, extension data, and about:config preference configurations are removed. If you've made accessibility configurations, you may need to change them back after refreshing.

Testing a clean user profile or turning off extensions and re-enabling them one at a time would be better for anyone invested in extensions which do actually useful things.

At the same time, i question why someone who is obviously clever and writes scripts does not have a backup, and did not check what would happen when pressing the Refresh Firefox button, or back up at the least their Firefox user profile (maybe more, for those extensions which installed globally).

I am not sure what else cor-el could do to help. They know their way around Firefox rather well.