Go to your computers explorer program and enter this in; C:\Users\===YOUR USER NAME===\AppData\Roaming\Mozilla\Firefox\Profiles then open the folder with DEFAULT in its name. Good luck.

Thanks for the answer.

Unfortunately, the library is not there. There's just the sqlite files there, which proofs that mozilla still uses the library.

Okay .... We do this the hard way. Start Firefox. After Firefox has finished loading, Go Firefox Options > Help > Troubleshooting. On the left side, part way down, there is a button labeled Show Folder. Press it. Your computer browser will open to the proper place. Before you do anything, create a short cut so you can return to the folder later if you need to.

Mate.

I know how to access the folder, actually Im asking for the library dll because I need it to read a .sqlite file from that folder.

It's just that I cant find the library that firefox uses to read sqlite files.

My question is a developer question.

Hello, see : https://support.mozilla.org/en-US/questions/960781#answer-441520

thank you