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

It now happened third time

Csound1 wrote:

I have been fortunate enough only to have had that message once, I replaced the drive and have not seen it since (3.5 years)

It now happened third time for me within a few weeks, so the backup system is useless. I have a time capsule. How could I replace the drive?

Time machine has been so helpful in the past, saved me several times. Now it's useless.

I went back to using my old G-Drive mini on my MacBook, but now I will have to buy another one for the second MacBook in my house. So my Airport is now just a $400 WiFi transmitter.

Very disappointed that Apple cannot solve this with a software update.

I just got this message on a late-2013 13" MacBook Pro Retina backing up to a 2TB Air Capsule. Didn't know what to do so it's now doing the painfully slow new backup.

But: What is the worst thing an automated backup program can do? Destroy all your backups without offering any recovery option "to improve reliability". And that's what this program does. Get to work on this Apple. It's not like the Time Capsule is cheap. Earn your margins with reliability and functionality!

And now its happening every few days. I'm done. I will check out Carbon Copy and Arq. Very disappointed, Apple!

I don't see that a pice of backup software can be considered "the best of a very small lot" when it proceeds to destroy all backups from time to time. Which other choices offer this as a (non) option?

I also had the dreaded message (MacBook Pro - Sierra latest version - TC wireless connection) and twice rebuilt my backup in about a week. After going through the comments here I deleted PowerNap and have for nine days not had a further problem.

But I have been able to reproduce the "crash" that followed - with failure to enter TM and the screen resolution changing to 1970's pixel sizes. It can be achieved by trying to enter TM when there is limited disk memory remaining. That's not a very friendly way to deal with the problem Apple, so another indicator that TM is not very robust.

tjbarry wrote:

I don't see that a pice of backup software can be considered "the best of a very small lot" when it proceeds to destroy all backups from time to time.

You are free to pick whichever alternative you want to.

I think the problem may be having both ethernet and wifi enabled.

I had had no problems in the past and was blaming sierra, but then came across a post on another forum mentioning backup problems with both network interfaces enabled.

I only turned on wifi since installing sierra so that Siri could tell me the weather and I could unlock the Mac with my Apple Watch. ( For some reason it needs both bluetooth and wifi enabled )

I have just turned wifi off a couple of days ago so it will take awhile to see if this has fixed the problem as it would occur every 2-4 weeks.

I think the problem may be having both ethernet and wifi enabled.

Unfortunately, that is not the problem. It will not be long before you see the message again.

If it was something as simple as this, don't you think that Apple would have issued a support document about this long ago? The problem has been with us since Snow Leopard, but it is much worse with Sierra.

Regular calls over the past 5 years to Apple Support have always resulted in the same answer........"We're working on it". At this point, it might be wise to pick one of the following choices to help you decide if you want to stay with this.

1) Apple has been "working on it" for over 5 years and still doesn't have a fix, but we can hope.

2) Apple was at one time "working on it" but is no longer doing so.

3) Apple never was "working on it".

Add to this:

4) Apple will never be working on this

I don't think the discussion about having both Wifi and Ethernet enabled is relevant for this problem. I have been using Ethernet only for Time Machine and never had any problem, until Sierra..

I have been a dedicated solely apple fan since the Panther Days. I have all Apple computers in my home from Mac Pro, 2 iMacs, MacBook air, 2 MacBooks, 2 iPads, 2 iPad minis, 3 iPhones, 3 apple tvs, airport extreme, airport express, apple watch, i don't even remember what else is lying around. I feel the time has come to find a new company as apple as not been the robust innovating company they once were. They do not seem dedicated to their entire lineups and don't seem to care about the major frustrating issues such as this. Are there any good suggestions on other hardware?

I erased my time capsule completely on April 14, with zeroing out. So far (April 27) I have not had the problem. It's too early to say if the problem has been completely solved, that has to wait a few months. But encouraging so far.

An update: While I'd hardly call this conclusive, I've not seen this problem occur again since I disabled PowerNap on my MacBook Pro (Retina, 15-inch, Mid 2014) on April 6, 2017. So, yes, it's only been a month, but that's the longest reprieve I've seen from this error since it first happened to me in January of this year.

If the issue was as simple as disabling Power Nap on the Mac, Apple would have provided this "fix" long ago.

Glad that is working for you, but it does not work on the two Mac laptops here that have Power NAP disabled. One Mac went 4-5 weeks before the "verification" message appeared, the other a bit longer, maybe 6 weeks.

Hopefully, your Mac will go longer before the message appears again. I think it is more a question of "when" not "if".

Please post back in 60-90 days to let us know how things are working.

ahostmadsen wrote:

I erased my time capsule completely on April 14, with zeroing out. So far (April 27) I have not had the problem. It's too early to say if the problem has been completely solved, that has to wait a few months. But encouraging so far.

Sigh. Now I get a new type of error:

Time Machine couldn’t complete the backup to “Anders's AirPort Time Capsule”.

An error occurred while copying files. The problem may be temporary. If the problem persists, use Disk Utility to repair your backup disk.

Restarted computer and Time Capsule. Problem persists.

Hey gang--

Way back early in this thread, I too had the dreaded "must create a new backup" error. At the time I was running OS X Mavericks.

So, I just upgraded my iMac this week to El Capitan. I have not yet resumed Time Machine backups, and leaning toward erasing my Time Capsule and starting a new backup in hopes of avoiding future problems.

Just curious if anyone thinks that is unnecessary, good idea, other?

Thanks!

Dave

Expect the same issue with El Capitan no matter whether you try to continue existing backups or erase the Time Capsule and start over again with new backups.

The only question is when.....not if....the dreaded message will appear.