Microsoft is investigating an ongoing Exchange Online issue that mistakenly flags legitimate emails as phishing and quarantines them.

Microsoft is investigating an Exchange Online incident that wrongly flags emails as phishing, quarantining messages and disrupting delivery.

Microsoft has fixed a known issue that prevented Microsoft 365 customers from opening encrypted emails in classic Outlook after a December update. This bug affects users who try to open messages ...

Since 5 February, Microsoft Exchange Online has been silently swallowing legitimate business emails. Most people affected ...

Microsoft has confirmed Exchange Online is incorrectly flagging legitimate emails as phishing due to an overly aggressive URL ...