The last backup could not be completed

damonbus

macrumors regular
Original poster
May 9, 2013
119
30
NY
I just started getting the last backup could not be completed message when I try to backup to the cloud. Any ideas what could be wrong?
 

kingdom23

macrumors regular
Oct 31, 2011
129
3
I just started getting the last backup could not be completed message when I try to backup to the cloud. Any ideas what could be wrong?
Been happening to me ever since iOS 9 update and even with latest update, still get the same message as you.
 

eagleglen

macrumors 65816
Oct 2, 2009
1,104
293
Phoenix, AZ
My backups have been failing about 75% of the time. I have to keep trying and it will get about 90% complete, hang there, and finally say it could not be completed. Eventually one will work however. Since upgrading to 9.0.2 it has been perfect. Took only 10 minutes and was done. These have all been initiated by me manually. Hopefully it will work automatically every 24 hours and I can have confidence in it the way I was before iOS 9.
 
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jdag

macrumors 6502a
Jun 15, 2012
834
213
Update...My backup was successful this morning...when I plugged in my phone it ran automatically. However, when I tried to manually run it again it failed.
 

MiamiC70

macrumors 6502
Oct 16, 2011
276
60
Update...My backup was successful this morning...when I plugged in my phone it ran automatically. However, when I tried to manually run it again it failed.
Had same issue.
Solution for me was;
  1. Turn off iCloud backup on the phone
  2. Turn off apps that are backing up to cloud
  3. Restart phone
  4. delete backup on phone
  5. Restart phone
  6. rebackup to iCloud
Worked fine after that
 

jdag

macrumors 6502a
Jun 15, 2012
834
213
Had same issue.
Solution for me was;
  1. Turn off iCloud backup on the phone
  2. Turn off apps that are backing up to cloud
  3. Restart phone
  4. delete backup on phone
  5. Restart phone
  6. rebackup to iCloud
Worked fine after that
That did not work for me. I also tried logging out and back into iCloud...no luck.
 
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jdag

macrumors 6502a
Jun 15, 2012
834
213
My backup worked once, on 10/2, and not since (either automatically or manually).

Has anyone called Apple support? If so, what did they have to say? I plan to call, but need to make the time.
 

jdag

macrumors 6502a
Jun 15, 2012
834
213
I think mine is working now...here's what I did:

1) Deleted the iCloud backup set and turned off iCloud backup on the iPhone.
2) Backed up to computer via iTunes, then reset the iPhone and restored that backup.
3) Turned iCloud backup on.

That worked initially, but then on the 2nd backup attempt it failed. I then deleted some apps I don't use often and now the backup seems to be running properly.
 

3568358

macrumors 6502
Jun 11, 2015
274
106
United States
Go to Settings > General > Storage and iCloud Usage > UNDER ICLOUD SELECT Manage Storage > SELECT YOUR DEVICE > Scroll to Bottom > Select Delete Back Up!

Then, plug in your phone to iTunes, and do a back up that way, this will transfer all of the Diagnostic Info that takes up a butt load of space on your device. Then, once this is done, try to do an iCloud back up.
 

TRICKorDEVICE

macrumors 6502a
Sep 20, 2014
798
102
Go to Settings > General > Storage and iCloud Usage > UNDER ICLOUD SELECT Manage Storage > SELECT YOUR DEVICE > Scroll to Bottom > Select Delete Back Up!

Then, plug in your phone to iTunes, and do a back up that way, this will transfer all of the Diagnostic Info that takes up a butt load of space on your device. Then, once this is done, try to do an iCloud back up.
My wife's iPhone 6+ has the same issue (running 9.0.2). The other problem is that it says it cannot delete the old backup!

Anyone else have this problem?
 

jdag

macrumors 6502a
Jun 15, 2012
834
213
My wife's iPhone 6+ has the same issue (running 9.0.2). The other problem is that it says it cannot delete the old backup!

Anyone else have this problem?
I did have the problem with deleting the old backup as well. I found some instructions somewhere online, and then was able to delete the backup...

1) Settings ---> iCloud ---> Storage ---> Manage Storage ---> select your phone ---> WAIT
2) Do not go further until the Next Backup Size completely loads (this seems to be an important step)
3) Once finished, click on Show All Apps
4) Then scroll to the bottom and try deleting

I don't want to say that this issue is widespread, but it certainly seems to be a problem for a good number of people. Once I finally got a "clean" backup running it seems to be stable. But it was a lot of trial and error.
 
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3568358

macrumors 6502
Jun 11, 2015
274
106
United States
I did have the problem with deleting the old backup as well. I found some instructions somewhere online, and then was able to delete the backup...

1) Settings ---> iCloud ---> Storage ---> Manage Storage ---> select your phone ---> WAIT
2) Do not go further until the Next Backup Size completely loads (this seems to be an important step)
3) Once finished, click on Show All Apps
4) Then scroll to the bottom and try deleting

I don't want to say that this issue is widespread, but it certainly seems to be a problem for a good number of people. Once I finally got a "clean" backup running it seems to be stable. But it was a lot of trial and error.
I do believe this will work! :) Lets hope this fixes your issues guys!
 

TRICKorDEVICE

macrumors 6502a
Sep 20, 2014
798
102
I did have the problem with deleting the old backup as well. I found some instructions somewhere online, and then was able to delete the backup...

1) Settings ---> iCloud ---> Storage ---> Manage Storage ---> select your phone ---> WAIT
2) Do not go further until the Next Backup Size completely loads (this seems to be an important step)
3) Once finished, click on Show All Apps
4) Then scroll to the bottom and try deleting

I don't want to say that this issue is widespread, but it certainly seems to be a problem for a good number of people. Once I finally got a "clean" backup running it seems to be stable. But it was a lot of trial and error.
I do believe this will work! :) Lets hope this fixes your issues guys!

We are temporarily without wifi. Once we're back online I'll try your tips!

Thanks!
 
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