Apple designs and creates iPod and iTunes, Mac laptop and desktop computers, the OS X operating system, and the revolutionary iPhone and iPad.
“The certificate for this server is invalid” error, fix
There have been reports about an error message popping up when certain users are trying to access their their iTunes or App Store. It keeps saying “The certificate for this server is invalid. You might be connecting to a server that is pretending to be “itunes.apple.com” which could put your confidential information at risk.
How to fix that
This issue has to do with the correct date and time on the iOS device. When trying to connect to a secure server, the date and time is also taken note off and if there is some discrepancy on that side, the connection will not be allowed. And this doesn’t only occur on iOS devices but also on any other computer trying to connect to a server. For example if the year on the handset in 2010 and we are in the year 2013, the error message will pop up.
The solution is to change the time. To do that you can go to Settings > General > Date & Time and check if the time is correct. Also check whether it is set to automatic or manual. If you have traveled you should make sure your current time zone is correct.
On the first instance it is advised toggle the automatic feature on. That way the time should be set according to online servers. If that doesn’t work you can turn that feature off and then set the time manually based on the current time on your watch. Cross check to be sure that the time on your watch is really correct.
In case the same issue keeps coming back
Some other users have reported that the Date and Time on their Apple device keeps changing and they have to keep resetting it every once in a while. Some noticed that this problem occurred when their iPad gets into sleep mode. The fact remains that once the time on the device changes it is going to cause a problem when you try to connect to Apple servers.
You might also want to read this: “Please contact iTunes support to complete this transaction” error fix
This issue has to do with the battery. It is probably getting weak and it is time you replace it. If you bought a new battery not long ago and are still dealing with this same problem it might be that you don’t allow it to recharge to its full capacity. It is a good idea to keep your iOS device plug to a USB port for some few hours until you see the battery get to 100%.
In another rare case there could be a bug in the iOS itself. If that is the case Apple will be notified about it and in the next release update it should be fixed.