Sebastian Foss-Solevaag has broken his country's long-wait to become Norway's first world champion in the men’s slalom for 23 years.
Tom Stiansen was the last Norweigan who won the event, in 1997.
Henrik Kristoffersen, also of Norway, came in third, with Adrian Pertl of Austria finishing second in the final race of the Cortina 2021 championships.
Norway looked in good shape at the business end of the second run in Italy, after a format change.
Double Olympic medallist Kristoffersen took the lead with five racers left to go.
Olympic bronze medallist Foss-Solevaag then overtook his teammate to take top spot and the win.
Austrian newcomer Adrian Pertl stormed to a second-place finish with the final run of the championships.
"I never expected that result when I woke up this morning... I am really happy," he said on the official broadcast.
Kristoffersen finished third overall.
Foss-Solevaag was already a world champion in 2021 after Norway won the team event.
The changing conditions caught out a lot of big contenders.
The USA’s hopes of making the podium were left in tatters with both Jett Seymour and Luke Winters failing to finish their second runs.