I've spent a half hour with Grok trying various things and nothing works. The attempt fails almost instantly with an authentication failure. This has worked for a thousand years on multiple Macs and Synology DiskStations and all of them fail the same way starting with the 26.4 update.
Justin Creveling wrote:
for anyone using TrueNAS Scale: update to at least 25.04. after editing plists and removing destinations and verifying passwords and verifying encryption keys and verifying i can connect to the server in finder etc. etc. etc., the only thing that i needed to do was update truenas to 25.04 from 24.10.
what complicated things for me and had me chasing my tail was that i moved my backup sparsebundle to a different truenas server, so i was also chasing red herrings with the file and permissions etc., in the end i had everything fine and the issue was the smb handshake between the new macos version of smb and the truenas version.
There is a Samba bug in this realm, fixed with Samba 4.22.7, though maybe not fixed in 4.23.* per the following:
https://bugzilla.samba.org/show_bug.cgi?id=15926
"I believe this is only fixed in the 4.22.x branch; it's still an issue with the latest 4.23 releases, including 4.23.5."
Also, the password is simple ASCII characters.
nm i see you resolved it
MacOS 26.4 has broken TimeMachine backups to NAS.
