Updated my M4 MacBook Pro to OS 15.3 yesterday. Now am unable to backup computer files using Time Machine. Getting the message "Time Machine did not finish backing up because some files were unavailable. Backups will resume when your Mac is unlocked." Can't locate problem files. How can I solve problem??
MacBook Pro 16″, macOS 15.3
Many reports that macOS Sequoia breaks Time Machine in interesting ways (here's a collation of woes should you wish to feel less alone). I have not yet been able to reliably complete automatic Time Machine backups since updating to Sequoia (including 15.3). Now, once a week, I perform a manual Time Machine backup, and I'll repeat this until a fix is (someday, eventually) issued. Here are the steps:
Many reports that macOS Sequoia breaks Time Machine in interesting ways (here's a collation of woes should you wish to feel less alone). I have not yet been able to reliably complete automatic Time Machine backups since updating to Sequoia (including 15.3). Now, once a week, I perform a manual Time Machine backup, and I'll repeat this until a fix is (someday, eventually) issued. Here are the steps:
Updated my M3 Macbook Air yesterday, and, subsequently my Linux time machine was no longer available. Frustrating! Finally got it running again by temporarily deactivating the option to block all incoming connections in Firewall Options of the MacOS Firewall (in Network Settings). After that, the Linux server again was shown in MacOS Finder, and, I was able to use the Linux machine's AFP share to run the time machine backup (even after blocking all incoming network connections again).
If you're also using a cloud-based syncing or backup service, Time Machine might say that some of the files on your Mac cannot be backed up until syncing is completed.
from:
If you can't back up or restore your Mac using Time Machine - Apple Support
what happens when you choose "back up now" from the Time machine menubar menu?
The backup attempt gives the same response during an automatic backup or a manual one, selecting "back up now".
I should make it clear that the back up does start. The failure notice comes at about 30% backup when it stops the process. My Time Machine drive shows that a partial backup was done.
Thanks much, ajmicek. Happy too know I'm not alone with this problem. Maybe Apple will fix it some day...
Thanks, but doesn't help my problem. y firewall protection has always been "off".
Unable to backup Macbook Pro after OS15.3 update
