But they could not have been more wrong.
In fact, social media exploded with ironic tweets and posts revealing the true hidden reason for the mixup: the scary hackers and their sinister mastermind Russian President Vladimir Putin.
Anyone in Hollywood blamed Vladimir Putin yet? #oscars— Piers Morgan (@piersmorgan) 27 февраля 2017 г.
Some users went further by pointing out the similarities between the Oscar ceremony and presidential elections in the US, whose surprising results were also blamed on those elusive but omniscient Russian Hackers.
The mix-up evoked memories of a similar error at the 2015 Miss Universe pageant. That time, host Steve Harvey mistakenly named the first runner-up, Miss Colombia, Ariadna Gutiérrez, as the winner. A few minutes after she was crowned, Harvey announced that he had read the results incorrectly and that Miss Philippines, Pia Alonso Wurtzbach, was actually the new Miss Universe.