Backups fail with "The SSL connection could not be established"

[kenkendk]

Hi @ingolf and @luwill, welcome to the forum

@ingolf

The SSL connection could not be established, see inner exception.

Is this related to running on a 32bit Linux?
If so, this is a related report: SSL connection could not be established (32 bit client, Debian Trixie, caused by change of libssl3 to libssl3t64.) · Issue #6554 · duplicati/duplicati · GitHub

The problem is the way .NET8 loads the libssl library on 32bit operating systems so we cannot fix it without upgrading to .NET10 (which we should do anyway)/

@ingolf

Before the upgrade, my previous version (2.1.0.5_stable, I believe)

That would surprise me, as that is also based on .NET8. If you were on 2.0.8.1, that would be on Mono which had other SSL issues, but likely worked on 32bit.