Hello ... ,
I have another, but similar problem with synchronization.
- Thunderbird-Version: 78.7.1 (32-Bit)
- Betriebssystem + Version: Windows 10 Pro Version 20H2 19042.804
- Kontenart (POP / IMAP): IMAP
- Postfachanbieter (z.B. GMX): posteo.de
- CardBook-Version: 55.8
- Eingesetzte Antivirensoftware: Defender
- Firewall (Betriebssystem-intern/Externe Software): windows
Since a few (or many?) days the synchronizations in both directions fails. I have created a new address book in CardBook (CB), using the same posteo addressbook . All addresses ahve been downloaded, but still the sync fails.
For some adddresses with Contact-Foto I get extra errors in the sync protokoll. The foto is not transferred to CB.
BTW: Calendar also seems to have sync-problems.
I have no glue, how I could narrow down the reasons for the problem. Let me know, how I could make special test.