‘Technology update’ leaves some Starbucks registers offline in Chicago, the U.S.

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Registers at some Starbucks locations in Chicago and across the country were offline Tuesday morning as the result of a technology update, prompting a surge of posts on social media by caffeine-hungry customers as the company scrambled to bring the systems online.

According to a Starbucks spokesperson, the company installed a "technology update" in its registers in locations in the U.S. and Canada overnight, but some locations were offline Tuesday morning.

Customers reported outages to WGN throughout the Chicago area, including Clarendon Hills, Downers Grove, Hinsdale, Oak Lawn, ​New Lenox, Buffalo Grove, Melrose Park and Chicago. However, the stores remained open, and many customers posted on social media that they were given free coffee during the outage.

As of around 2:30 p.m. Tuesday, a Starbucks spokesperson said "virtually all are once again fully operational with the remaining few stores scheduled to come back online shortly."