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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'
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'
Tl;dr. This tip also worked for me. Thanks!
Waiting fix from Apple.
Details:
I have Synology NAS and use Time Machine service (all device in same local network). It's working fine for years.
After successful update to Sonoma 15.0.1 i received error message:
The backup disk image was ejected or disconnected from your Mac while backing up.
I tried restart my devices. Also I checked wifi connection. All working fine, but backup not work.
After reading comment I just turn off firewall, and backup ended successfully.
Backup worked fine until the 15.0.1 update, but honestly, firewall was turned off to be fair, because otherwise working was not possible.
Still, we need to make the engineers aware, that Sequoia is far away from a production release because base functionality is not working.
Reading the comments I tried turning the Mac firewall off and the backup is now working fine. Thank you
I don't see that as very helpful though; the solution, not the advice LOL. I already have to run backups manually because of "failed' messages all the time. So I use it once a day manually. If I have to start turning the firewall off I don't know I can be bothered. It could be I don't need the firewall on the Mac? I don't know
same here, I thought I was losing my mind, router, or network for the past week.
Turned off Firewall in OSX 15.01 and now backup is working. Will turn it on after it fully completes. What a dumpster fire.
Strange you should say that, as I've run my Time Machine backups to my NAS for going on 4 years without problems until today with Sequoia 15.0.1/
For the past year I've been running into bug after bug after on MacOS. Now this again. It's getting rather pathetic. Apple needs to up their game and start delivering what they promise and preach. This TimeMachine/firewall thing is again another day of Apple issues. I can hardly consider this 'Pro'. This stuff breaks flow.
You know what would be ballsy. If Apple would refrain from a MacOS release next year and just fix all of the bugs and refactor the OS to an extend that their primary workstation OS doesn't feel like somebody's hobbyproject abd an experiment in quality control abstinence.
This method not appear to work for me, unfortunately. I'm also backing up with Time Machine to Synology NAS.
Tried removing the Time Machine target in System Settings, and disabled/reenabled "Bonjour Time Machine broadcast via SMB" in DiskStation's Control Panel > File Services, re-added the Time Machine target. Still getting the error: "The network disk disconnected from your Mac while backing up."
I have two Synology NAS devices, and several Macs running MacOS Sequoia 15.0.1 – none of them can currently finish a Time Machine backup to any Synology NAS. However, all of the Macs could complete Time Machine backups to the same NAS devices in version MacOS Sequoia 15.0.
Exactly the same here. Access to the NAS via Finder also not possible anymore:
Nothing has changed in my setup, except installing upgrade to 15.0.1. Since then I get this in the console:
Backing up to my Synology NAS, using Sequoia 15.0.1 (24A348), only works in Safe Mode.
15.1 with Firewall on + Little Snitch still does not working for me. It also says Drive disconnected sometimes and "in use" but it isn't.
Sequoia 15.1 does not fix the problem. It makes it worse: the workaround of turning off the Mac Firewall which worked with 15.0.1 does not work anymore.
Just spent an hour+ with apple support. had me boot into safe mode, shut down my firewall and the backup worked! Obviously still an issue but at least I got a backup to my NAS. after it's finished I will reinstall the operating system, turn the firewall on and try again. stay tuned...
My physical FW is independent of Mac OS - it's a physical device. It's still the same issue in Sequoia 15.0.1 -> turning on Mac OS firewall breaks TimeMachine backup to a NAS. It's really horrible.
I always rely on a two-stage FW: physical device and Mac OS, never trust a single source. I currently just need to remember to turn on Mac OS FW starting a business trip to be safe in hotels and public networks.
What causes TimeMachine backups to fail on NAS devices?
