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NH-S Author

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

Top-ranking 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

Jan 20, 2017 11:57 PM in response to Samboca

And another for me on my Mac mini and Macbook Air! :(

YatBob

Level 1

9 points

Jan 26, 2017 8:39 AM in response to jimmyfrompinellas park

Well 10.12.3 Did not fix the problem

Dogcow-Moof

Level 8

36,629 points

Jan 31, 2017 8:31 AM in response to NH-S

It seems to be a Sierra bug of some type; I've had too many backups marked failed over the past few months.

Jan 31, 2017 9:32 AM in response to Dogcow-Moof

Try my suggestion and let me know if it helps. It has worked for me, so far.

Jan 31, 2017 3:13 PM in response to ZeMiguelP

Did you try my suggestion before giving up?

rbirch

Level 1

8 points

Jan 31, 2017 3:19 PM in response to Mitch Stone

I have been using your method for two weeks. This morning I performed a DFA with no errors.This afternoon the dialogue popped up requiring a new backup. 😠

Jan 31, 2017 10:19 PM in response to rbirch

Darn. So far it's working for me, or at least it seems to be. Did you try running DFA on the backup after you received the message?

Fynker

Level 1

4 points

Feb 7, 2017 6:59 AM in response to Samboca

I bought because of an error specially Time Capsule 3TB, but the error persists! In vain I threw money! Apple already when Fix the the problem !!!!

Fynker

Level 1

4 points

Feb 8, 2017 1:00 AM in response to Dogcow-Moof

Come let make a new backup, but why remove the old! And 1TB each time anew copy takes a while

YatBob

Level 1

9 points

Mar 10, 2017 3:33 PM in response to Mitch Stone

I have also started using Time Machine Scheduler with 6 hour back up increments and so far everything has been working for a month

Mar 11, 2017 4:32 PM in response to jimpal

Maybe, but not for me. My iMac backs up fine, but my Mac Mini does not.

Mar 13, 2017 1:50 PM in response to richard.s.hall

Both running Sierra?

Mar 13, 2017 3:13 PM in response to Mitch Stone

Yes, both of my machines are running Sierra...makes me wish I hadn't upgraded... :-)

Mar 16, 2017 4:42 AM in response to fastermac

Also the same message almost every month since Sierra on my Macbook Touch. :-(

Mar 19, 2017 5:11 PM in response to Kwestshions

Either way, its been happening for months with no response from Apple.

Make that years.

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