Many of the company’s online services broke at once.
The issues also appeared to affect Microsoft Azure, its cloud services platform, meaning that other websites could also be affected.
Microsoft recognised some of the issues on its social networks and server status page, and indicated that it was searching for the cause of the problem.
Follow our latest coverage of the issues here.
Hello and welcome...
08:38 , Andrew Griffin
... to The Independent’s live coverage of an ongoing outage at Microsoft.