Millions of Hotmail, Windows Live and MSN customers were left high and dry after another outage left them unable to access their inboxes for around two hours.
When users tried to log in at around 5am yesterday morning, they were presented with a message which read: 'You don’t have an inbox … yet.'
According to a posting on the Microsoft Live blog, the incorrect message was sent out because of "a network issue that we encountered while doing routine maintenance".
"We have corrected the problem and you should be able to access your Hotmail and other Windows Live services again now," the blog continued. "We apologise for any inconvenience caused by this issue, and we thank you for using Windows Live."
Any users who are still experiencing problems have been asked to contact Windows Live Help.
Although the timing of the incident means that UK customers are unlikely to have been affected, the news will add to those doubts some users have over the software-as-a-service (SaaS) model.
In February, Gmail suffered a major outage for around three hours after one of the firm's European datacentres overloaded, causing cascading problems through its other datacentres.
While these outages are generally few and far between, they cause anger and panic among the user community. Given their high profile, such incidents may deter corporates thinking of investing in mission critical web-based services such as email.
However, the SaaS model is nonetheless making steady inroads into the corporate IT sphere. Last month software company Serena Software migrated 700 of its staff over to Gmail in one day.
Cotton seedling freezes to death as Chang'e-4 shuts down for the Moon's 14-day lunar night
Fortnite easily out-earns PUBG, Assassin's Creed Odyssey and Red Dead Redemption 2 in 2018
Meteor showers as a service will be visible for about 100 kilometres in all directions
Saturn's rings only formed in the past 100 million years, suggests analysis of Cassini space probe data
New findings contradict conventional belief that Saturn's rings were formed along with the planet about 4.5 billion years ago