Office 365 packages popular Microsoft software such as Word, PowerPoint and Excel into an online subscription. Teams is a collaboration tool that integrates with Office 365. The disruption follows a similar incident last week when some users of Google’s G Suite cloud productivity tools experienced errors.

The outages may be more disruptive at the moment because so many people are working and studying remotely. Microsoft and Google’s offerings are used widely by schools and other educational organizations, which are conducting most classes over the internet.