iTunes to iPhone "Unknown error 0xE800007F"

Update:

All,

I also started having errors again so my original post was not a fix. On the positive side, I am looking into another possible cause for the error. I ran a netstat –abn and dumped it to a text file and searched for the Apple mobile Device Driver service and mDNSresolver (Bonjour). What I saw was that mDNSresolver was listening on not only my mail LAN interface but also on my 2 virtual interfaces which are the Hamachi VPN connection and Ceton interface ( I have a Ceton TV tuner card installed). My thought is that mDNSresolver tring to find my iPhones on these these virtual interfaces first and timing out before it finds them. I have uninstalled Hamachi and disabled the Ceton interface and will monitor this to see if I have any issues in the next few days. I will report back and let all know how it goes.

Andy

so you are no longer backing up to local computer?

Thanks for the update, indeed a positive note. I think you mean mDNSResponder rather than resolver, though I am happy to be corrected. Look forward to your feedback on that one. My feeling is that this is a good avenue to explore and you might be onto something here. I'm going to see what else I can find out about this.

Incidentally, I use INMETHOD.COM "Air Video Server" (on my Windows Home Server 2011 where my iTunes is installed) and I'm wondering if that is impacting this - it requires Bonjour to be installed to work. I will disable it for the rest of this week and see how I get on.

I'm also interested to know whether the version of Bonjour makes any difference whatsoever to having a sucessful WiFi sync? Windows users can look at the properties of the mDNSResponder.exe file in c:\Program Files\Bonjour\ folder to find their version.

I have file version 3.0.0.10, dated 30/08/2011. I assume this is updated when installing new versions of iTunes as its packaged with the iTunes installer.

No solution here works. I tried the "reset network settings" and thought it had fixed the problem as syncing worked for a while and the iPhone didn't disappear as it usually did when trying to sync wirelessly.

However 1 hour later, problem was back. I think the only solution is for Apple to fix some bug they've introduced. Please do not keep giving false hope to people watching this thread, unless you've verified your "fix" over a few days and can be as sure as possible that it will help...

WIFI SYNC ISSUES.

i am running iTunes 10.5.2 for Windows (ugh, windows, i know, getting a Mac this year!).

i have a black iPhone 4S 32GB, and a black iPad 2 32GB, AT&T 3G.

both devices are running iOS 5.0.1.

the iPad 2 seems to be fine, no issues.

the iPhone 4S keeps giving me that "unknown error" you all are getting, "iTunes could not connect to this iPhone because an unknown error occurred" 0xE800007F.

it has been happening for at least a couple of weeks.

If any Cupertino people read these forums, please fix this! something is broken behind the scenes.

this is an issue that needs to be investigated and resolved. this is one of those problems that many people will not report, many people may not even notice, and the people who do notice may not care much about it (since it isnt a major UX-affecting issue).

but something very wrong is going on under the hood, please update itunes/iOS to resolve this. thanks!

Message was edited by: rushbc

Well I started having the issue again today. All seemed well after my last changes until I rebooted the comuter today (for something unrelated to this issue). I tried to sync via wifi and my iPhone dissapeared from iTunes and then later I got the 7F error again. I checked the Windows Application logs and no errors related to iTunes or Bonjour, so it looks like Hamachi was not causing this issue. I guess I will wait (like others here ) until Apple hopefully fixes this issue.

Andy

Add me to the list- it happened 4-5 days ago and I get roughly 30 messages over a day.

27" 2010 2.93ghz i7 iMac. All 4 iDevices- iPhone 4S, iPhone 4, iPod Touch (3rd Gen), iPad 2

Lion 10.7.2

iTunes 10.5.2

iOS 5.0.1

iTunes Match, iCloud, Wifi Sync all on

This is what I just love about the all mighty "perfect" Apple and the legendary customer service. 15 pages of people reporting the same issue (myself included)

41205 Views 218 Repliesthus far and zero acknowledgement from Apple that there is a problem. We must all be doing something wrong on our end I'm sure.

That's just this thread- there are several others. I'm not in a huge rush as I know it takes a while to fix things, but it would be nice to know that 10.7.3 or 10.7.4 will address this (or an iTunes or iOS update- whichever is the problem)

That is why I am not stressing out too much about this issue. For starters, it is not a huge problem, and it doesn't destroy the user experience (at least for me). It is more of a minor annoyance since I don't even get that error or see that error, very often.

I am hoping that the forthcoming iOS update will resolve the issue. 5.1 is due to be released to the public soon, I think that iOS developers are already beta testing the third beta of 5.1.

Maybe Apple will push out an update to iTunes as well.

mhibbs:

Nobody is claiming that Apple is perfect. If Apple was perfect then customer support, tech support, AppleCare, and these forums would not even exist.

I hope that enough people keep commenting on these threads, because even though an official representative from Apple is not commenting in here, I know that if there is enough "noise", Apple will see it, and do something about it....even though you won't normally see an Apple employee post in here. History bears this out.

Keep in mind that there are approximately 200 million users of iOS products, and even if ten thousand people report an issue, that is still a tiny, tiny percentage of all users. Of course the people who actually report an issue are a small percentage of the people who have said issue. That is why it is good for more people to call AppleCare or get active on these forums. I didn't used to post on these forums, but the more people using the forums, the better it is for all. Between these forums, and calls to tech support, developers submitting bug reports, and Genius Bar visits, Apple will get a good idea of what the issue is, and how widespread it is.

Yeah...the small percentage of users who have actually tried to use wi-fi syncing are all on here talking about how it is busted. All I'm asking for is a simple "yes there is an issue" from them so we can quit trying everything under the sun to fix the problem. I love Apple products but acknowledging they aren't perfect and that there are issues being worked on is something MS does a much better job at (like Technet w/ official known fixes for known problems) which this clearly is at this point.

To date has customer support, AppleCare, etc been able to resolve this for anyone or have they acknowledged it is an issue to anyone? Unless I missed it somewhere in all of these posts I don't think they have.

I'm with you mhibbs. I hope they know that it is a real issue and hope they get it resolved soon. I have faith that they will. And I agree that it would be nice if Apple actually issued a statement or had a post on here acknowledging that the issue exists. But for some reason, that just isn't how Apple rolls. They've always been tigh-lipped about stuff like this.

Unfortunately, all of this chatter about whether Apple is good or bad at this makes this topic thread 15 pages long and pretty useless to anyone looking for a solution. So, for anyone reading from here backwards...

As yet, this thread currently contains NO CONFIRMED SOLUTION to the problem described.

Just out of interest? Has any one called Apple support to see what they say about this issue?