Microsoft Exchange and Teams Calendar are currently down worldwide, with Outlook also “crashing,” according to users who said they could not view or send emails.

The technology company said that it is “investigating an issue impacting users attempting to access Exchange Online or functionality within Microsoft Teams calendar” in a post on social media platform X on Monday morning.

No reason has been given for the malfunctions. 

“While we continue to work on mitigating the issue, we’ve added a comprehensive list of impacted services and scenarios to the more info section,” Microsoft said an hour after the initial post on X.

When loading Outlook, an error page appears: “Your request can’t be completed right now”.

Users also reported that Outlook was down.

“Has been acting up all morning, Exchange Online, Teams, Outlook, none of these services are working as expected, can’t get in to see quarantined emails either,” one user wrote on X. 

Users from The Netherlands, Poland, France, and Sweden wrote on X that they were having issues with Microsoft’s Outlook. 

According to the email marketing platform website, Mailmeteor, the services are affected worldwide. 

“A service outage is currently affecting Microsoft Outlook. More than 423 reports were made today,” the website said. 

Reports on Downdector, a website that tracks outages, started just before 8:40 am CET, reporting more than 800 reports from users that the services were not working.

This story is being updated by our journalists.