Security News > 2021 > May > Office 365 bug: Exchange Online, Outlook emails sent to junk folder
Microsoft is investigating an Office 365 issue causing Outlook and Exchange Online emails to skip recipients' inboxes and being sent their junk folders instead. "We're investigating an issue in which email is being sent to the junk folder," Microsoft shared on the company's Microsoft 365 Status Twitter account.
The Microsoft 365 Service health status page is currently directing customers to the Microsoft 365 Status Twitter account for more details regarding this ongoing incident.
Last month, a Microsoft 365 outage prevented Exchange Online users from sending and receiving emails, with messages being stuck in transit and not reaching the recipients' inboxes.
The March massive outage affected multiple other Microsoft services at the time besides Exchange Online, including Microsoft Teams, Forms, Xbox Live, Intune, Outlook.com, Office Web, SharePoint Online, OneDrive for Business, Yammer, and more.
In September, Microsoft users experienced another worldwide outage showing "Transient" errors that knocked down Office 365 and several other related services, including Microsoft Teams, Office.com, Power Platform, and Dynamics365.
Update 1: Microsoft is reverting the change behind email incorrectly being routed and restoring emails accidentally sent to the junk folder.