Error (0xE8000084). What you do.

**cyclistfromashburn** solution works like a dream !!!

Fixed the problem in 2 minutes !!! Bookmarked this page because I keep getting the error from time to time. But it's an easy fix

Thanks cyclist !!!!

Any ideas of how to solve this same problem on a Mac?

Serious thanks. All better :-)

So, this problem has been discussed on here since September 2012 yet despite the almost daily new releases from Apple, they still haven't fixed it 😮

Two points to make:

1. If iTunes wasn't such a complete bag-of-spanners maybe it would be easier to fix.
2. Maybe if the developers spent more time creating an application that was fit for purpose instead of trying to endlessly bolt on yet more unwanted and unnecessary bloatware, they might have something worth having.

That didn't work for me and I've tried everything on every thread a few hours of tourture. I'm running Windows 7 64 Itunes 11.0.2.1 But you lead me to a new path which worked.

Close Itunes - Go to Task Manager - Services tab - select Apple Moble Device - click Services at the bottom - select Apple Mobile Device Manager - click stop on left side - wait a few seconds - click start - now open itunes - connect iphone and blam it recognized it!

Thanks for starting me down the path ReanimationXP!

Brilliant!

Thank you! This worked for me as I couldn't find the exe file anywhere...

Cut and paste the following into notepad, save the file as itunesrestart.bat into your my documents folder.

When iTunes has this issue, just run the file by double clicking it.

@echo off

echo Time to kill the iTunes

taskkill /F /IM iTunes.exe

net stop "Apple Mobile Device"

net stop "iPod Service"

net start "Apple Mobile Device"

net start "iPod Service"

I've had this exact issue since the very first day of using iTunes WIFI sync, it appears that Apple just don't care at all about the "it just works" mindset. These forums, and many others, are choked with this topic, only to have absolutley no fixes provided by Apple (I've contact support and also Genius bar without any success).

Apple, at least write software that provides some logging so we can figure something out for ourselves, or perhaps just write stable code that works.

Added to this is the commonly recognised iPhone5 WIFI throughput issues, also widely discussed & people are logging support cases/visiting genius bar......yet it's a continuing problem.

Starting to re-think iOS moving forward, whilst the walled garden is great when it works.......it soon becomes a prision when it doesn't.

I rec'd this error code when I connected my iphone 4 to iTunes with a non-Apple cord. (I was travelling and had left my charger, etc. at home, found an "Apple Style" charge cube/cable at a gas station, and bought it for a few dollars.) It charged the phone fine, but would not sync w/ iTunes.
When I got home and used the original cable that came with my phone, there was no problem.

Here's an improvement on ozsmacd's batch file that will fully cycle iTunes (even if it's running with devices connected), fix this issue, and tell you what it's doing in the process.

To use it, paste into notepad, pick File > Save As.
Change "save as type" to All Files, and then name the file "fixitunes.bat"

This will only work on a 64-bit version of Windows. Tested on Windows 7 x64 and iTunes 11.01.

@echo off

echo -^> Killing iTunes and Services...

ping localhost -n 3 > nul

tskill itunes /a

net stop "Apple Mobile Device"

net stop "iPod Service"

echo -^> iTunes and Services stopped.

ping localhost -n 3 > nul

echo -^> Starting AppleMobileDeviceHelper...

AppleMobileDeviceHelper.exe

ping localhost -n 3 > nul

echo -^> Starting AppleMobileDeviceService...

AppleMobileDeviceService.exe

ping localhost -n 3 > nul

echo -^> Starting iTunes...

ping localhost -n 3 > nul

start "" "C:\Program Files (x86)\iTunes\iTunes.exe"

echo -^> Waiting for iTunes to start...

ping localhost -n 12 > nul

exit

Have found a permanent quick fix... I have had ths problem for months now, in the past i have tried uninstalling itunes on my computer and re-installing it but with no success. I tried this again at the weekend and itunes has been completely revamped and it worked straight away finding my ipod immediately and more to the point finds it everytime my ipod is connected and i go to itunes :-)

Just wanted to thank you, Cyclist... been having this problem for ages now and hadn't seen any kind of workaround or solution that fixed it... til your post! Thank you, thank you, thank you!!!

WOW actually worked for me ! Thank you. What a pain having to reinstall itunes etc this fix makes it easy!

Thank you sandanjam - I've been working my way through the fixes and yours was the one that worked for me!

Fingers crossed they figure out a way of stopping it happening soon...

Try turning your phone off and then back on.

I had the same problem and tried going through the steps given by others for "AppleMobileDeviceHelper.exe", but this did not work for me.

I tried various things and finally called AppleCare. The first tech I spoke with had me uninstall iTunes and some other related things - mobile device support, update, Bonjour, etc. Then I downloaded iTunes again. I still had the same error code when I opened iTunes and connected my iPhone 5. I just kept getting the same error code (0xE80000084), again and again.

The technician transferred me to the next level of support (who was great, by the way) and he had me try a couple of things, and then asked if I had turned off my phone, which I had not.

I closed out iTunes, made sure the phone was not connected, and then turned off the phone. Believe it or not, turning off the phone, and then turning it back on, and then connecting the cable to the phone, seems to have solved the problem. The phone shows up now on the left side bar, the phone sync's and charges, and I have not had another error code, popping up.

So, hopefully this has solved my problem. If so, what a simple "hit yourself on the head, why did I not think to do this first", thing it is -- but so far, so good.