Tag
#Exchange Online
4 stories taggedExchange Online.
Cloud Security
Microsoft Exchange Online buckles: email delays, sign-in errors hit tens of thousands
Microsoft says it has spotted a shared authentication fault behind a widespread Exchange Online outage causing missing emails and login failures.
3 min read
Vulnerabilities
Microsoft Pushes 22 Security Fixes, Six Rated Maximum Severity
A batch of patches covers Microsoft's cloud and identity products, with six flaws scoring a perfect 10 out of 10 on the severity scale. Most fixes apply automatically, but one Defender vulnerability is still waiting for a patch.
3 min read
Cloud Security
Microsoft Exchange Online is Wrongly Locking Away Customer Mailboxes
A memory bug from an infrastructure change has been quarantining legitimate mailboxes since Sunday, blocking email and calendar access with no full-fix timeline yet.
3 min read
Policy & Regulation
Microsoft sets a hard stop for Exchange 2016 and 2019 security fixes
After October 2026, on-premises Exchange 2016 and 2019 servers get no more patches, even for customers paying for extended support.
4 min read