They had been out of action since 2pm.
Lotto machines up and down the country are fully operational again after an outage of more than two hours, with Dublin, Kildare and Waterford affected among others.
“Full service was restored to the National Lottery retail network at approximately 4pm,” a spokesperson for the National Lottery said.
“We apologise for any inconvenience caused and wish players the best of luck in tonight’s draw.”
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