Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

Level 1

28 points

Time Machine completed a verification of your backups on “Time Capsule”. To improve reliability, Time Machine must create a new backup for you.

As per title - since upgrading to Sierra i have been getting the error.

Time Machine completed a verification of your backups on “Name of Back Up Drive”. To improve reliability, Time Machine must create a new backup for you.

If i select 'Start new back up', it takes about 24 hours to make first back up, backs up once or twice more then i get the error again.

iMac is connected to time capsule by gigabit ethernet cable.

I don't believe it can be a hardware fault as i alternate back ups between Time Capsule and a Synology NAS

and get the same problem with both. (This worked fine for at least 18 months prior to Sierra)

I know other people have been having this problem and its been suggested that the cause is anti virus software - i don't have any Anti Virus Software installed.

I have about 1.5TB of photos and videos on my iMac so being without reliable backup is pretty stressful - so any steers towards how i might solve the issue would be much appreciated!

Thanks

iMac with Retina 5K display, macOS Sierra (10.12)

Posted on Oct 12, 2016 2:33 PM

Best reply

Mitch Stone

Level 1

56 points

Posted on Jan 2, 2017 4:45 PM

I am approximately 100% certain that the culprit here is Sierra. We have two iMacs of the same vintage (a year old). One is running Yosemite and the other was updated to Sierra. The former still backs up to our Time Capsule every hour without issues. The latter fails verification every week or so. I ran Disk First Aid on the Time Machine disc and it reported:

The volume Time Machine Backups was found corrupt and needs to be repaired.

File system check exit code is 8.

File system verify or repair failed.

Operation failed…

Yet this Time Capsule has no problems backing up the Yosemite iMac, only the iMac running Sierra.

View in context

91 replies

Mar 29, 2017 2:46 AM in response to NH-S

I have the same question.

In my case a Macbook Pro to a WD MyCloud NAS 2TB.

Occurs regularly.

When it works, it is OK, even restores a file or two...then "create a new backup" message...sigh...

Time Machine completed a verification of your backups on “Time Capsule”. To improve reliability, Time Machine must create a new backup for you.