Microsoft is addressing an Exchange Online outage caused by a code conflict affecting IMAP4 mailbox access, with a fix already deployed. The incident highlights ongoing challenges with Azure and Microsoft 365 services, impacting users globally. #ExchangeOnline #IMAP4
Keypoints
- Microsoft is working to resolve an intermittent Exchange Online outage affecting IMAP4 access.
- The issue is caused by a code conflict related to authentication support in recent IMAP deployments.
- Microsoft has deployed a fix and expects the process to complete by the next update.
- The outage is classified as a critical service incident in the Microsoft 365 admin center.
- Previous incidents include DNS outages and MFA-related access disruptions impacting various Microsoft services.