itunes could not connect to this iphone because an unknown error occurred (0xE800007F). wifi sync

I finally just turned off my wifi sync - I guess they'll put an update out sooner or later which will address and correct this.

I not only get this error message when wifi sync is enabled but I also found that the iTunes remote app can't find my shared library either. Disabling wifi sync stoppend the error messages and restored the remote control functionalilty.

I have the same issue. I did the aboved work around mentioned in this discussion and it did fix the problem. It would be nice though to use the functionality that iOS 5 brought whch is wifi syncing. Its wieird cause my iPad is found and syncs fine over wifi.

Windows 7 Pro 64 bit

4gb Ram

itunes 10.5.2.11 64 bit

Possible solution:

I have been experiencing this since I first enabled Wi-Fi sync; to add to the knowledge base, I have an iPad1 and an iPhone4, but only the iPhone threw the errors. It appears to me, though I did not do rigorous testing, that the error is thrown related to when I plug the iPhone into line power. Other than that, Wi-Fi sync works normally, whether invoked from iTunes or from the devices.

One day ago, based on clues in ando1's post at https://discussions.apple.com/thread/3399156?answerId=17114764022#17114764022, I added a firewall exception for syncserver.exe. Note that I made no other changes, and have not rebooted or reset any of the devices involved. Twenty-four hours later, I have not experienced the error since; normally by now I would have expected half a dozen appearances of the error.

Please note some of us are running 3rd party firewalls that actually notify you of all inbound and outbound connection attempts so if a blocked apple service/component/port was really the problem then we would have identified it a long time ago.

I have allowed all Apple-related stuff in my Comodo Firewall since day one and yet I receive this stupid error a few times a day.

Not sure about Comodo, but I don't believe most software firewalls (e.g. kaspersky, zone alarm, etc.) necessarily report UDP multicast traffic as actively blocked. Dunno if that's related (though we do know that Apple favors multicast for certain related purposes), haven't run Wireshark in promiscuous mode to gather data, haven't attempted the negative proof -- just know that I made one pretty tightly controlled change and haven't experienced the error in ~24 hours since. I'll follow up if I do.

YMMV.

Well I've run:

netstat -a -b

on my PC and syncserver.exe does not appear to be creating any connections whatsoever, be it TCP or UDP.

Update on allowing a firewall exception for syncserver: insufficient. Although I went almost two days without an occurrence, I go two occurrences this morning. Bummer.

I'm also still having this issue, stragely the only reason I really need this is for Podcast updates, why can't apple let the iOS device auto download and avoid this issue for me (been playing with iCatcher, however I need to remember to open it and keep it active enough to complete downloads).

The only fix I can find is to kill iTunes and restart twice a day (just before I go to bed & just before I wake up). This allows my phone to sync at least once a day without issues. I've commented out the section that checks if iTunes is running, as I don't care because I want to to start anyway, I've included for your reference. This is not a clean workaround, but the best one I can think of given when the error occurs, the pop-up window locks iTunes from any active updates & using non force kill doesn't close it.

Just save as a .vbs file & use taskscheulder to setup as per your preference.

'

Set WshShell = WScript.CreateObject ("WScript.Shell")

' Set colProcessList = GetObject("Winmgmts:").ExecQuery ("Select * from Win32_Process")

'=============================================================================== ===============

' For Each objProcess in colProcessList

' If objProcess.name = "iTunes.exe" then

' vFound = True

' End if

' Next

' If vFound = True then

WshShell.Run ("C:\Windows\system32\cmd.exe")

wscript.sleep 50

WshShell.sendkeys "taskkill /F /IM iTunes.exe"

WshShell.SendKeys "{ENTER}"

wscript.sleep 50

wshShell.SendKeys "exit"

WshShell.SendKeys "{ENTER}"

wscript.sleep 50

sub shell(cmd)

' Run a command as if you were running from the command line

dim objShell

Set objShell = WScript.CreateObject( "WScript.Shell" )

objShell.Run(cmd)

Set objShell = Nothing

end sub

shell "c:\Progra~2\iTunes\iTunes.exe"

' End If

PS - I also decided to not sync my iPad over WIFI, this seems to help reduce the number of issues & I really don't need to sync it all the time.

Edited to include iPad statement.

PS - Be warned, sometimes iTunes starts playing music when it re-starts (not sure why it's "sometimes"). This morning had a very interesting choice of song start playing at 06:00, my wife not happy!

I figured out I get this message when my iPhone is not connected to power. The automatic wifi sync only works when the device is connected to power and iTunes is open on my computer. If the iPhone is not connected to power and I get this message all I have to do is connect my iPhone to power and the sync begins automatically.

Hy!

The same problem by me. I use a JBL dock, what is always charging my iPhone when it's docked. I'm using wifi sync too, and when it's charging I get sometimes the 0xe800007F error too. So I think the problem is not connected to the charging only!

Hope Apple will solve this annoying problem soon!

Appears that the latest iTunes update has solved this issue for me. 12 hours of syncing without issue, never happened before. Two iPhone 4's and an iPad2 reliably syncing via WIFI!

Update: Just had 0xE800007F error again 😟, so might be a little better, but not fixed.

Yup, just updated my iTunes software and re-enabled wifi sync on my iPod. In less than an hour I got the dreaded error message. So much for the latest version fixing it. I think Apple needs to first aknowlege there is a problem before they'll ever fix it.

Same here. Latest version of iTunes, re-enabled wifi sync, saw error message after about 12 hours. Both iPad an iPhone did successfully sync over wifi. Error message first appeared sometime after the devices were unplugged from their chargers. Doesn't seem to happen when devices are plugged in.