Two major South Korean cryptocurrency exchanges have been forced offline, after critical Amazon Web Services (AWS) servers suffered nationwide failure Thursday morning.

AWS, one of the world’s widely used cloud services, was hit with major internal server failures that brought popular digital asset exchanges, Upbit and Coinone to a screeching halt.

Several popular e-commerce hubs were also unreachable for roughly an hour, reports ZDNet.

“Between 3:19 PM and 4:43 PM PST we experienced increased error rates in the [Asian-Pacific region],” declared AWS.

“The issue has been resolved and the service is operating normally.”

Amazon maintenance details also confirmed networks in Seoul the biggest hit by the interruptions.

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