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July 25, 2026 15:14
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Fix for macOS 26 Tahoe Time Machine SMB backup failing with BACKUP_FAILED_DISCONNECTED_DISK_IMAGE error on Synology, QNAP, TrueNAS, UNAS. nsmb.conf configuration guide.
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| [default] | |
| signing_required=yes | |
| streams=yes | |
| soft=yes | |
| dir_cache_max_cnt=0 | |
| protocol_vers_map=6 | |
| mc_prefer_wired=yes |
Aaaaaand the issue has returned for me on 26.6 beta, and the solution that worked before for me is not now:
rm -rf'ing /Library/Preferences/com.apple.TimeMachine.plist
Gotta love a regressive bug like this. I will be installing macOS 27 Beta on one of my machines when it becomes available to developers and AppleSeed folks later this week and report back
Thank you! I am still having issues... would love to hear how you get on
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Aaaaaand the issue has returned for me on 26.6 beta, and the solution that worked before for me is not now:
rm -rf'ing /Library/Preferences/com.apple.TimeMachine.plist
Gotta love a regressive bug like this. I will be installing macOS 27 Beta on one of my machines when it becomes available to developers and AppleSeed folks later this week and report back