 And broadcasters in several countries were offline after the outage, which appeared to be affecting Windows PCs. Carriers, including America Airlines, Delta, United, all issued ground stops this morning, citing communication issues. Less than an hour after Microsoft said they resolved the error, according to Reuters, Sydney Airport, one of Australia's largest, said there would be delays. So everybody was operating on delays for most of the day. What users saw when they tried to log in was they saw a big blue screen.