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Microsoft outage ups cloud reliability worries

Company saw many of its cloud services disrupted when DNS problem occurred

Microsoft outage ups cloud reliability worries
Several of Microsoft's cloud services, including Office 365, were unavailable for several hours on Friday after a DNS error.

Millions of Microsoft online services users were unable to access a variety of services, including Hotmail, Office 365 and Skydrive on Friday due to a major service failure, according to the BBC.

Microsoft told the BBC that the problem appeared to be related to the internet's DNS system.

The reliability of cloud services is already under question and such a major problem occurring in Microsoft's system in only likely to add to concerns about cloud computing reliability versus local storage.

This latest disruption, between 0300 GMT and 0530 GMT follows the temporary loss of Office 365 services in mid-August, just a few months after it launched.

"We have completed propagating our DNS configuration changes around the world, and have restored service for most customers," Microsoft said in a blog post during the service outage.

The Domain Name System (DNS) translates URL web addresses into the internet's native system of IP addresses.

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