I upgraded my Kaspersky and I closed everything before launching the upgrade process. Everything went well, but when I launched my Thunderbird, no mail and content were displayed.
Everything is blank. Strangely my accounts are detected when expanding Tools/Account Settings.
I completely closed Kaspersky and launched Thunderbird again, but it fixed nothing :(
It is as if closing Thunderbird has damaged a core file. Any idea how to fix it?