After migrating my Thunderbird profile from Windows 7 to Windows 10, encrypted sending and receiving is no longer possible.
I use Thunderbird version 60.7.2 32bit on both machines with POP3 mailboxes.
I use Thunderbird version 60.7.2 32bit on both machines with POP3 mailboxes.
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Hello sfhowes and thanks for your support. GDATA's AV was the Problem. The certificates had to be supplemented. Now everything works fine.
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Does the W10 computer have a security/AV program scanning SSL (secure) connections?
Επιλεγμένη λύση
Hello sfhowes and thanks for your support. GDATA's AV was the Problem. The certificates had to be supplemented. Now everything works fine.