The Guardian - More than 5,000 flights cancelled worldwide after problem affecting Microsoft WindowsBusiness live latest updatesPassengers have described bedlam at UK airport check-ins after a global IT outage on what was due to be the busiest day for flying since the start of the Covid pandemic, while train networks have also been disrupted.More than 5,000 flights have been cancelled worldwide after Microsoft Windows operating systems used by airlines, airports and some air traffic systems were affected. Continue reading...