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Export date: Tue Jun 18 4:53:26 2019 / +0000 GMT
Out of a sudden iTunes struck me with this error: The iPhone "..." could not be synced because the sync session failed to start

I did web research, but did not really find a proper solution to this.
Well, there were a few which either did some funny things on Windows (I run a Mac ....), or recommended to restore the iPhone from a previous backup, removing just one app, installing just one new app through the iTunes store, and, well, some other curious and strange things.

After all, I thought to give the restore thing a try, however that changed nothing. Same message came up. So I disabled WLAN sync as to not interfere with the iPhone being hooked up by the cable already -- again to no avail.

So I decided to look into the iTunes internals. There I found a primising folder within the Application Library folder called SyncServices. It was not that big, around 6 megs. But inside there where clear traces of synchronisation stuff.

My solution to the above error was then to quit iTunes, remove the SyncServices folders completely. And voila, iTunes would just start syncing my iPhone as if nothing bad had ever happened.
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