Apple's internet services experienced trouble for the second time in as many days on Thursday as customers reported outages affecting the iOS and Mac App Stores, iCloud, iTunes and Apple TV.

Apple acknowledged the issue on its system status webpage, initially noting "some users" were impacted by a downtime to App Store, iTunes in the Cloud, Apple TV and Volume Purchasing Program services starting at around 12:45 p.m. Pacific. An update added a slew of iCloud and iCloud-related products to the list of nonfunctioning services.

Today's system outage comes one day after users reported connectivity issues with iCloud Music Library. Without backend access to Apple's music servers, some iTunes users attempting to stream tracks ran into repeated "Unable to connect to iCloud Music Library" messages, while others experienced issues with Apple Music authentication. A small number of customers also saw their music libraries seemingly disappear.

At least one problem appears to lie with Apple's purchase processing system, as multiple AppleInsider readers reported seeing error messages when attempting to access App Store and iTunes assets. For example, some users looking to buy an item through the iTunes storefront were greeted with a popup reading, "The iTunes Store is unable to process purchases at this time." Others have reported seeing "Unable to connect to iTunes purchases" messages.

Apple is currently investigating the problem and the outage is ongoing as of this writing.

Update: It appears the initial glitch has cascaded down to affect a large number of services including iCloud Account & Sign In, iCloud Backup, iCloud Bookmarks & Tabs, iCloud Calendar, iCloud Contacts, iCloud Drive, iCloud Keychain, iCloud Notes, iCloud Reminders, iCloud Storage Upgrades, iCloud Web Apps, Documents in the Cloud, iMovie Theater, Back to My Mac, Find My Friends, Find My iPhone, iPad, iPod Touch and Mac, iPhone Calls to iPad and Mac, iWork for iCloud, Mac App Store, Mail Drop and Photos.