Microsoft is addressing an Exchange Online bug causing Outlook mobile users to face crashes and 12-hour email sync delays.

Reports claim Outlook Classic is crashing if users open 60+ emails at once Avoid opening that many or use a workaround that might affect your entire system Microsoft is investigating the issue, ...

Did you log into Microsoft Outlook and noticed nothing looked the way it did yesterday? It could be due to a recent change. Here's how to fix it.

On internal message boards, messages seen by CNBC showed employees asking why their emails with the word "Israel" may go through but not the word "Palestine," as well as "Gaza" and other terms.

To keep up with late calls and emails, more employees are punching back in after hours, Microsoft's survey found.

Microsoft is limiting free onmicrosoft email domains to 100 messages a day, pushing businesses toward custom domains.