I have an iPhone app in the App Store for the last 3 years or so.
A couple of days ago one of my users complained he is getting an error in the app that I planted there in case when he tried to connect to my servers he gets NSURLErrorServerCertificateUntrusted.
I have checked and double checked my certificates but they all seem OK, I also have thousands of users that use my app every day and don't face the same error.
He tried re-installing the app and switching from WiFi to 3G but that didn't solve his problem.
Anyone has any clue on what might cause this problem for my user and how he can bypass this issue?