The iPhone cannot be synced. An unknown error occurred (-40)

My iPhone cannot synced with iTunes. What can I do?
It happen after I deleted Mobile Applications folder in my itunes library folder. I have implemented File menu - Devices - transfer purchases from iPhone. But it still cannot synced with the error.

see
Error 13, 14, 35 and 50 (or -50)
These errors are typically resolved by performing one or more of the steps listed below:
Perform USB isolation troubleshooting, including trying a different USB port directly on the computer. See the advanced steps below for USB troubleshooting.
Put a USB 2.0 hub between the device and the computer.
Try a different USB 30-pin dock-connector cable.
Eliminate third-party security software conflicts.
There may be third-party software installed that modifies your default packet size in Windows by inserting one or more TcpWindowSize entries into your registry. Your default packet size being set incorrectly can cause this error. Contact the manufacturer of the software that installed the packet-size modification for assistance. Or, follow this article by Microsoft: How to reset Internet Protocol (TCP/IP) to reset the packet size back to the default for Windows.
Connect your computer directly to your Internet source, bypassing any routers, hubs, or switches. You may need to restart your computer and modem to get online.
Try to restore from another known-good computer and network.

Similar Messages

The iPhone cannot be synced. Unknown error (13019) - anyone run into this?

The iPhone cannot be synced. Unknown error (13019) - anyone run into this?

Stephen's got you covered.
I've also seen the following reported cause/workaround:
After several Google searches I found the iPad syncing problem to be caused by iPhoto 9.4 not handling the & correctly in names. It's not recognizing them as & which is causing problems with XML. You can manually change them or wait for Apple to issue a fix to iPhoto 9.4. I started to do the manual fix & I just have too many to change.
(Manual renaming isn't going to be an easy/good workaround for a bunch of folks, though.)

When try to sync iPhoto to ipad.the ipad cannot be synced. an unknown error occurred (-50) . can anyone help

the ipad cannot be synced. an unknown error occurred -50

Go here:
http://support.apple.com/kb/ts1314
delete the cache that corresponds to the photo app you're using (iphoto, or aperture or anything else)

IPhone cannot be synced - an unknown error occurred (13019)

I have the blues. My iPhone cannot be synced and is rejected in iTunes with the message:
"The iPhone "my iPhone name" cannot be synced. An unknown error occurred (13019)."
Can someone here help me.
TIA,
Ken

I have a similar problem. After having a lot of drama with backups freezing and not completing I had to click on the 'x' to procede with any sync's. Now that 3.0.1 came out I decided to update when the popup came up saying would you like to update.
I went ahead, it downloaded the update then it couldn't install it and came up with errors. then my iPhone displayed the USB cable and the iTunes logo on the screen, now it won't do anything and iTunes won't recognise it.
I've tried to reset it, and reset my computer but nothing works. I am not uninstalling iTunes and re-installing it to see if that works. I now have lost everything on my iPhone I presume.
I am furious.

Why am i receiving error message "the ipod cannot be synced. an unknown error occurred (13019)" when i try to move a song from my itunes library into my music folder on my ipod touch?

Why am I receiving the following message when I try to move a song from my iTunes library into my iPod touch's music folder?
"The iPod cannot be synced. An unknown error occurred (13019)."
It was working just fine. Then all of a sudden this error message popped up.

Try here:
iTunes: Error 13019 during sync

The iPod Cannot Be Synced An Unknown Error Occured (-6999)

After trying to sync my iPod touch the bar on the bottom fills up to like 2gbs of other then i get the (-6999) error does anyone know how to fix this

check this thread http://discussions.apple.com/thread.jspa?messageID=10521108&#10521108.

I can't get my ipod touch 2nd generation to sync with itunes, at the end of the sync the message ''the ipod cannot be synced, an unknown error occurred (13019)'' my sister who has the same ipod also has the same problem.

my sister who has the same ipod also has the same problem, i ve tried re downloading itunes and restoring factory settings on my ipod but nothing works!

Did you try all the suggestions mentioned here? iTunes Error 13019 during sync

I upgraded my iphone 5 to iOS 8 and now i get an itunes error message when I try to sync "this iphone cannot be synced. Unknown error.

I upgraded my iphone 5 to iOS 8 and now i get an itunes error message when I try to sync "this iphone cannot be synced. Unknown error. (-50). my icloud drive was stuck in an upgrade cycle, but i've stopped that and still get the error message.

I restarted itunes and tried again (based on a similar question/solution from 2012).
I don't get the error message anymore, but it's really sort of odd that after step one of sync, it looks as if sync stopped, and then all of a sudden you see step 4 of sync.
Also before the upgrade I had 7+ gigs of space free and after the upgrade I have 10 gigs free. seems like something is amiss, but it's not like I have anyway of determining that.

The mini ipad cannot be synced, an unknown error occured (-69)

I cannot synced files after I had changed to windows 8.1. When I synced the mini ipad, a message pop up- "the mini ipad cannot be synced, an unknown error occured (-69)"
How can I synced again?

Unknown Error -69 When Syncing Music or Video
https://discussions.apple.com/article/HT1210
http://www.makeuseof.com/tag/12-most-common-ipod-sync-problems-fix/
more
ipad sync error 69

I keep trying to sync my ipod touch, but it says "the ipod cannot be synced. an unknown error has occurred." what do i do?

I keep trying to sync my ipod touch, but it says "the ipod cannot be synced. an unknown error has occurred." What should I do so I can music on my ipod?

Try resetting the iPod. Nothing will be lost.
Reset iPod touch: Hold down the On/Off button and the Home button at the same time for at
least ten seconds, until the Apple logo appears.

No music after 3.0 upg.: cannot be synced an unknown error occurred (-208)

Upgraded my iPhone 3G to 3.0. All went smoothly and everything seems to be working fine. Only issue was that my music had disappeared. Went on to resync it but iTunes shows that the music is still there - but I cannot do anything with it: cannot add to it, cannot delete it, etc. Suspect files are fine but library is corrupt. Was hoping that adding or deleting a song would force a library reindexing but no luck.
"the iphone "name" cannot be synced an unknown error occurred (-208)"
Any suggestion on how to resolve this (outside of a device reset...)?
Thanks in advance.

The software can be found on Download.com, it's Ipod Copy 7.47. It's $20, but works perfectly.

Ipod cannot be synced an unknown error occurred (-40)

Had my nano for 6 months no issues with sync of music or photos, a few weeks ago every time I plug it to sync an error "ipod cannot be synced an unknown error occurred (-40)" click ok and it goes ahead with music sync but not photos.
help thanks

removed photo sync and no error message. checked for updates but ok.
4.14GB free space on ipod, tried syncing only 1 photo and error message returned?

"There was a problem downloading the software for the iPhone....An unknown error occurred (-23)." What should I do?

"There was a problem downloading the software for the iPhone....An unknown error occurred (-23)." What should I do?

i have the same problem:
I have an iphone 4s and I have been trying for months to update my phone from iOS 6.1.3 to the new one.
I recently got a new computer (my old harddrive crashed and will not work at all) and I just now copied all my music and photos to the computer.
Now I have been trying to update to the iOS 7.1 both on iTunes and on the iPhone but neither one work. I keeps saying "unknown error" .
I am wondering if I restore it to factory settings and then update it will the install work?
also since i have backed up to the iCloud and my computer..will i be able to recover my music, contacts, notes and photos???
thanks in advance.

I get errors trying to set my IPAD back to the factory setting. error: backup session failed. If I try to sync I get 3 more errors - 1) the IPAD cannot be synced, an internal error occurred. 2) required file not found. 3) folder specified instead of fi

Any help with errors setting IPAD back to factory setting? I received this error when trying to back up - backup session failed. Has any one had the following errors when trying to sync to computer?
1) the IPAD cannot be synced, an internal error occurred. 2) required file not found. 3) a folder specified instead of file.
Any help appreciated

Type "13019" into the search bar at the top of this page by "Support" and read the resulting help articles.

I get msg iPad cannot be synced. an unknown error occurred. (-50).

I get msg iPad cannot be synced. an unknown error occurred. (-50).

I have same problem. Anyone help on this???

HT4623 iphone cannot be restored an unknown error occurred

iphone cannot be restored an unknown error occurred

Hi djunerich,
Thanks for visiting Apple Support Communities.
See this article for help if your iPhone can't be restored:
iOS: Unable to update or restore
http://support.apple.com/kb/ht1808
Regards,
Jeremy

The iPhone cannot be synced. An unknown error occurred (-40)

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