Microsoft is investigating service issues preventing users from accessing their Microsoft 365 accounts and blocking access to installed apps.
The company confirmed the issue in a tweet shared via the Microsoft 365 Status account and pointed admins to the Microsoft 365 Admin Center for more details.
“We’re investigating an issue affecting access to https://msft.it/6016gbJ06 and Microsoft 365 apps,” the company said.
“Additional updates can be found at https://msft.it/6017gbJ0B under MO559201.”
Affected customers report experiencing issues accessing their Outlook mailboxes and an inability to connect to the Microsoft 365 servers.
Microsoft has yet to share which regions are affected by these ongoing connectivity problems or the root cause of the outage.
Last month, another Microsoft 365 outage caused Exchange Online connectivity issues for users in North America.
In March, one more service outage blocked Exchange Online customers worldwide from sending and receiving emails or accessing their mailboxes.
A massive outage also hit Microsoft 365 in January, an incident caused by router packet forwarding issues within Microsoft’s Wide Area Network (WAN) after a faulty router IP address update.
This is a developing story …