The Exchange Online mailbox issue is incorrectly quarantining some customer mailboxes, preventing affected users from receiving email and accessing other services. Microsoft is investigating the ...

Earlier today, Microsoft published a helpful guide for Windows 11 system admins on saving loads of internet data using Delivery Optimization and Connected Cache features. Additionally, the company ...

Microsoft released out-of-band Exchange Server security update that fixes a high-severity mailbox access vulnerability (CVE-2026-96940).

Microsoft is working to resolve an ongoing Exchange Online issue that has been mistakenly quarantining customers' mailboxes since Sunday. The incident, tracked by Microsoft under EX1436407, began on ...