Microsoft has been slowly trying to get its Exchange Online users to switch from Exchange Web Services (EWS) for accessing data in favor of Microsoft Graph. In 2018, the company revealed that EWS ...

Microsoft is investigating an Exchange Online bug causing anti-spam systems to mistakenly quarantine some users' emails.

Microsoft is investigating an ongoing outage preventing Outlook on the web users from accessing their Exchange Online ...

When using the service, you might see the message ... Microsoft 365 has experienced two outages. Users of Microsoft Teams, Exchange Online, SharePoint Online, OneDrive, Purview, Copilot, and ...

Microsoft says an outage affecting multiple Microsoft 365 services, including Teams and Exchange Online services, has been resolved. This comes after customers complained for several hours that ...

Ultimately, the success of the Exchange Online attack “was ... security practices at other cloud service providers, which maintained security controls that Microsoft did not.” ...