Microsoft is working to resolve an Exchange Online issue causing email access problems for Outlook mobile users who use Hybrid Modern Authentication (HMA). HMA is a Microsoft Exchange Server feature ...

Microsoft has acknowledged a new issue affecting Outlook for Microsoft 365 users and causing email-sending problems for those with too many nested folders. According to Redmond, this is likely related ...

Several thousand users reported problems with Outlook on Thursday morning, as Microsoft acknowledged that users might have issues accessing their mailbox. More than 2,700 users were reporting problems ...