Apple will have lost up to £17m from its cloud outages on Wednesday, after core services like the App Store and iTunes went down.
The cloud-based services were unavailable for around 12 hours. Apple blamed the issue on an internal technical error.
"The cause was an internal DNS error at Apple," Apple spokesman Tom Neumayr, according to The Sydney Morning Herald (SMH).
According to The SMH, revenue from those stores and other services averages £34m a day, meaning up to £17m was potentially lost.
Apple acknowledged on Wednesday that several of its core cloud services, including iCloud, iTunes and the App Store, were knocked offline.
"Multiple Store Services - All users are affected. Customers may be unable to make purchases from the App Store, iTunes Store, iBooks Store or Mac App Store," Apple said.
V3 tested the services and found most to be working, but reports said that the outages are sporadic and different tools are being affected in different regions. Apple's support page shows the problem going on until at least 3:25pm.
However, information on the iCloud and iCloud Mail outages appears to suggest that the situation was fixed at 1pm UK time Wednesday.
"iCloud Mail - All users were affected. Users may have been unable to access iCloud Mail. iCloud Account & Sign In - All users were affected. Users may have been unable to sign in."
The outage comes a few days after Apple took its main website offline to update it with new information on the Apple Watch, which was unveiled by CEO Tim Cook during a keynote presentation.
Cloud outages remain a major problem for the IT sector, despite numerous assurances from vendors such as Microsoft and Amazon Web Services that they are becoming a thing of the past.
Google suffered a major outage last week owing to a faulty patch update that took services offline for around 45 minutes.
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