Apple users were unable to complete purchases, run updates or login after its digital content stores as well as the iTunes Connect developer portal went down for about 12 hours yesterday.
Apple issued an apology saying, "We apologize to our customers experiencing problems with iTunes and other services this morning. The cause was an internal DNS error at Apple. We're working to make all of the services available to customers as soon as possible, and we thank everyone for their patience," reported TechCrunch.
The App and iTunes store sprung back online after about 12 hours of outage.