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iPhone - Stuck "Preparing to sync" when trying to sync with iTunes via USB cable

I've seen this be an issue for some for many versions of iPhones back (old threads), and from that I've been able to identify the culprit and a work-around to the problem (as Apple isn't fixing the underlying issue).


The problem is, when I plug in my iPhone (currently an 15 ) via USB cable to my computer running iTunes, iTunes sees the phone and starts with the "Preparing to sync..." message and then just sits there for a loooonngg time.


The issue appears to be the Apple program MDCrashReporter.exe which is found at the following location on an MS Windows PC (Windows 10 in my case):


C:\Program Files (x86)\Common Files\Apple\Mobile Device Support\MDCrashReportTool.exe


You can find it in the list of running processes when the sync is hanging.


You can unstick the sync by killing that process: Task Manager->Details->find it in the list->End Task


A more usefull solution is to disable it. What I did, that seems to work is:

Rename the executable: I renamed it to

C:\Program Files (x86)\Common Files\Apple\Mobile Device Support\MDCrashReportTool.exe-orig


So the extension now is .exe-orig (note: you must have admin rights to the machine to rename the file)


That keeps it from running and hanging up the sync process. Works great so far.


All I use iTunes for is to sync my work exchange calendar with my iPhone calendar - that's it. Now that I've disabled the ability for running MDCrashReporterTool, that sync takes a few seconds and done.


If Apple ever fixes its crash reporter tool then this won't be necessary. Or if Apple ever produces an application for managing and syncing the devices and ONLY that, maybe better still.


--

For completeness - the problem isn't the cable (its Apples own USB-C cable), its not the phone needing a reboot - it is bugs in iTunes and its support applications via-a-vis its drivers.

Posted on Nov 9, 2023 1:06 PM

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Posted on Dec 17, 2023 8:42 AM

For those using Mac, you don't need to fiddle with Terminal or have administrative rights. Even simpler work-around: just use Activity Monitor to Force-Quit the MDCrashReportTool process, as in thread 255344479.


PS: shutting down my Apple Watch indeed did not help, this seems unrelated as far as I can see on my end.

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161 replies

Apr 3, 2024 12:22 AM in response to pbGuy

iOS 17.4 does indeed seem to have solved the MDCrashreport causing the sync to get stuck however seems to have introduced a new bug. The sync now runs fast but any recently played music and playcounts is not synced correctly iTunes on first pass, and you need to sync it again.


For instance you have downloaded or ripped Song X onto your iTunes but you wish to sync it across to your iPhone. You also have several songs you have listened to on your iPhone since your last iTunes sync, such as Song Y which you have listened to 4 times. When you now sync the 4 playcounts of Song Y are transferred into iTunes and Song Ys total playcount increases by 4, but Song X isn't copying across to your iPhone. So you hit Sync again in iTunes, Song X then does copy across onto your iPhone but the original 4 playcounts for Song Y also transfer again. Meaning that Song Y now has 8 plays added! Completely messing up playcount totals (doubling them). Anyone else getting this?

iPhone - Stuck "Preparing to sync" when trying to sync with iTunes via USB cable

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