Recently NU 16 warned me that “core product files have been modified” and that I should reinstall or update the product. When neither worked, I uninstalled without retaining settings, downloaded a fresh copy and reinstalled to no avail. A day or so later Symantec provided an update that solved the problem. I reported my success with this in this forum, and praised Symantec for the rapid fix. However, later in the day NU reported having cleared my Firefox history, which I have spent several hours trying to recover. While I recognize that the information stored there may be useful to evil-doers and I regularly clear cookies with some exceptions, the usefulness of this browser information in my circumstances far outweighs the privacy concern. Privacy is a concern for me, to be sure, but large companies seem to be tracking my Internet use in any case.
What I missed is that the reinstalled NU was set by default to erase my browser history automatically. I would really, really like it back, and I immediately recovered and saved all erased files on the system to an external drive. However, I cannot find places.sqlite among them, and have located no other method to recover this information. No legitimate software should remove arguably legitimate files by default. Not without permission. If there is a recovery method other than restoring places.sqlite I would very much appreciate knowing about it.