Microsoft warned Exchange Server customers about critical OWA vulnerability CVE-2026-42897 affecting on-premises deployments.

On Thursday, Microsoft shared mitigations for a high-severity Exchange Server vulnerability exploited in attacks that allow ...

On Monday, Microsoft released the last major update for Exchange Server 2019. The aging Exchange Server is set to lose support on Oct. 14, 2025. This final update (2025 H1 Cumulative Update (CU15) ...

Organizations running Exchange Server 2019 won't be getting an H2 cumulative update (CU) this year, a Microsoft announcement this month explained. Microsoft is planning to defer the release of the ...

While there weren’t any genuine zero-day vulnerabilities to patch in May’s Patch Tuesday update, the fallout since then has ...

Microsoft has disclosed a new security vulnerability impacting on-premise versions of Exchange Server that it said has come ...

Microsoft on Thursday disclosed a zero-day vulnerability in Exchange that's under active exploitation, but four days later customers are still awaiting a patch. The zero-day, tracked as CVE-2026-42897 ...

Microsoft reminds us of the imminent end of support for Exchange Server 2016 and 2019. In nine months, the manufacturer will pull the plug. In a tech community post, Microsoft writes that the ...

Microsoft has reminded admins that Exchange 2016 and Exchange 2019 will reach the end of extended support in October and shared guidance for those who need to decommission outdated servers. Exchange ...

Two years ago, Microsoft officials announced the next versions of on-premises Exchange Server, SharePoint Server, Skype for Business Server, and Project Server would be available in the second half of ...