Symantec Endpoint prevents iPhone/iTunes sync – Windows

I just came across this issue this afternoon with one of our administrative employees. He decided to contact me after having attended my iPhone training course that is offered quarterly to our faculty/staff. He was unable to sync his iPhone 3G with his laptop because iTunes would lock up for several minutes after connecting the device and then pop up this error message:

iTunes iPhone sync issue

The message: “iTunes was unable to load data class information from sync services” was quite cryptic and not very descriptive, but I was able to find an Apple Support Article – TS2690 Outlining 3 possible causes/fixes:

1. Ensure that you have the latest version of iTunes.
2. Outdated versions of Symantec Endpoint Protection may cause this issue. If Symantec Endpoint Protection is installed on your system, confirm that it has been updated to Manufacturer Release 3 or later.
3. If you have third-party Bricopacks like Vista Ultimate Inspirat 2 installed on this system, remove them to resolve this issue.

So we made an appointment and I stopped by his office to take a look and see what could be done. This specific issue was caused by a combination of #1 and #2. After updating to the latest version of iTunes and rebooting, I discovered the problem was still there. Then I discovered his machine was running Symantec Endpoint Protection MR1. After upgrading him to MR4, we were able to download/install iPhone OS 3.0 and perform a sync to pull in his contacts, calendar, and bookmarks.

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Posted on July 27, 2009 at 5:25 pm by Clay · Permalink
In: general, windows, work

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