Running Windows 10. Recent update I lost most of my pending and storage contents. My attempts to restore through Profile APPData not successful to the point I gave up. Old guy, not too computer literate. Now getting an update message when I start Thunderbird and after I decline I get the message that it "can't update to latest version, download fresh copy & we will help install." Again I have declined as I am reluctant to do this and lose more email files however as I choose not to update, I continue to get the messages every time I open Thunderbird which is annoying. I would like the original files back and update Thunderbird and have no more problems.