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The newest fun part: with the latest update the network connections with enabled Firewall are stable, but if you backup your Mac with TimeMachine to a NAS device, the backup is no longer working. Stops between 200 and 400MB.
[Re-Titled by Moderator]
MacBook Pro 16″, macOS 15.0
I back up to a Synology NAS using Time Machine and it worked yesterday and not today after 15.0.1 update
"The network disk disconnected from your Mac while backing up."
Mine gets to 0MB. But with a film playing off the same NAS during backup gets to 95 MB then goes to 'skipping'
Same here, the difference: I am in charge managing the devices -> not real fun, but I decided to allow people changing the firewall config unless a fix is provided by Apple.
I know, not the best solution, but my people are IT pros -> they disable the FW in a safe environment and as soon being on the road, everything will get enabled. But still, that's not a solution just a workaround.
I'm going to try adding time machine to the exempted apps on firewall settings and see what happens; that would save turning firewall off and on for backing up, even though I also run an intego firewall - and have done for years without any issue for time machine. Like everyone else 15.0.1 has tripped the issue; partner's still on OS 14.6 and working fine to the same backup device.
Even though AFP is not listed as a way to connect to a NAS drive for Time Machine, I did exactly that--turned on AFP on my Synology DS218J NAS, connected to the server via AFP, and *I think* I selected the AFP-connected drive designated in the Synology settings for the Time Machine backups, and so far I'm 10%/10 GB into the initial backup with the firewall turned on.
I'll have to do some more experimentation, but connecting via AFP may be a workaround.
At least I think I'm using AFP...I turned it on in the DS2J settings, then when connecting to an external server I typed in "afp://ds218j.local:5000" and it connected to all the shares on the DS218J. I set up Time Machine to the "Time Machine Backups" share, firewall on, and the backup is progressing...14%/28GB, five hours to go over wifi.
I may try turning off SMB on the DS218J (after the other Macs in the family do their backups) and see if it still works on my 15.0.1 MBA.
Mine stuck at "connecting to backup disk..." and the log just said "Bonjour resolution not possible for 'afp://backupworker@x.x.x.x" indefinitely. Apparently I'm able to mount the AFP volume in Finder or `mount_afp` and I can tell Bonjour broadcasting works just fine, but the Time Machine just can't.
Im having a similar issue. We use a Synology Nas to edit footage from. Its been fine for near on 2 years. I updated (mistake) 2 weeks ago and then all of a sudden monday monring the server is disconnecting whenever it needs to do something ie: Exporting a video, reading the timeline, importing photos. It doesnt seem to matter about the file size. It just disconnects. Any ideas here? its only an issue with the NAS. Other drives like the Black Magic Cloud unit is fine. Also transfer speeds have slow right down
I have the same setup as you. I had to reboot twice after the 15.1 update and I started a new backup (because I thought that the old one might be corrupted). I don't know if the new backup was required but the reboots certainly were. Everything seems to be working well now. Good Luck!
I did this already with 15.0 + 15.0.1 and that fixes it also temporary, but I came back after a while. Will try this as well with 15.1 but this shouldn't be the solution to remove the whole backup and start again.
Disabling the firewall worked for me. I think I recall it working once or twice without deactivating the firewall on 15.0.1.
Now after updating to 15.1, it seems to work reliably.
This is also backup to a Synology NAS.
summary: 15.1 fixes it for me.
15.0.0 and 15.0.1 broke Time Machine backups for me as described in this thread. disabling Apple firewall in network settings was the workaround.
15.1 fixes it. I no longer need to disable the Apple firewall for Time Machine backups to complete on my Symplogy NAS.
Software: Little Snitch Mini and Cloudflare Warp.
hardware: MacBook Air M3 and Synology DS220+ NAS.
So I can back up with Time Machine now I am on Os 15.1. But only triggering the back up manually. If it's on the normal hourly auto. setting, it looks fine but then reverts to the "server disconnected during the procedure" type error log. But at least I can now back up. Definitely not moving from Os14 for other devices.
That because it Disney at every Mac Upgrade each year! That’s why I consider Time Machine to to basic and myself went shareware backups that continue programs instead where it picks up older backup files!
Appears fixed in Sequoia 15.1 (definitely broken in 15.0.1). I am now able to turn my mac's firewall back on. There was also an update to Synology DSM 7.2.2-72806 I installed at about the same time. So between the two updates, it is now fixed.
You're out ahead of your skis. Worse, you're smug about it. It's clear it is not caused by third-party firewalls, or even Apple's firewall - I don't have a separate firewall, and Apple's is turned off, and I still have the problem.
To be clear, it's not clear what is causing the problem.
It does seem likely that you're repeating yourself.
This is what I'm trying. Downgrading back to 15.0 per support page. How to download and install macOS - Apple Support
What causes TimeMachine backups to fail on NAS devices?
