Backup (esxi) fails

[Slewrate]

Hi,

The connection to ESXi is successful. When connecting to it, active backup reports that everything is fine, including SSH.

Back when the backup task runs, I get:



I know it seems like a firewall issue. For testing, I disabled all firewalls, and the issue is still there.
I'm out of ideas currently.

Does anyone have an idea what may cause this?

Thanks
Alex