Unable to access Time Machine Backup

[RalphW]

Hi saCos,
this has already been discussed here, including a temporary workaround:

Timemachine stops working after update to FW 5.19.117

After the automatic update to FW 5.19.117, Time Machine stopped working. Also I can’t connect via AFB to the Backup system - only smb is working. I think I need AFP to get time machine to work. Any ideas