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.
선택된 해결법
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?
선택된 해결법
Hello sfhowes and thanks for your support. GDATA's AV was the Problem. The certificates had to be supplemented. Now everything works fine.