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MOUNTAIN VIEW, Calif. (AP) — Google says it expects to have Google Calendar up and running normally following widespread reports of an outage.

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Google said Thursday that users had been seeing “server error” messages when opening the app. It later said that service had been restored for some users already and it expected a resolution for all users in the near future.

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Exasperated users took to Twitter to voice their frustration during the outage for the popular scheduling service. One user noted that Google Calendar going down “is like a snow day for adults.”

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