exchange server

Microsoft’s June 2026 Patch Tuesday, released on June 9, delivers 206 security updates across Windows, Office, Exchange Server, and developer tools, including three publicly disclosed Windows flaws in CTF, HTTP.sys, and BitLocker that Microsoft says are not yet known to be actively exploited...

CVE-2026-42897 is now patchable in Exchange Server Subscription Edition RTM SU7 through KB5094139, while organizations still running unsupported Exchange Server 2016 or 2019 need Extended Security Updates Period 2 eligibility to stay covered. If you run on-premises Exchange, the practical answer...

Microsoft released June 2026 Security Updates for Exchange Server Subscription Edition, plus ESU-only updates for Exchange Server 2019 CU14/CU15 and Exchange Server 2016 CU23, on June 9, 2026, addressing newly disclosed Exchange vulnerabilities and the earlier CVE-2026-42897 Outlook Web Access...

Microsoft said on May 12, 2026, that it will not release Exchange Server security updates this month for Exchange Server Subscription Edition or for Exchange Server 2016 and 2019 customers enrolled in Extended Security Updates. That makes May a quiet Patch Tuesday for on-premises Exchange, but...

Although Microsoft’s Exchange Server security-update cadence has been unusually quiet in the months after Exchange 2016 and Exchange 2019 reached end of support, April 2026 is different for one important reason: it is the final month of the temporary Extended Security Update program, and...

Microsoft’s Exchange Server strategy is entering a new phase, and the implications for on-premises customers are bigger than a routine servicing update. The company has now moved Exchange Server to the Subscription Edition model, with Exchange Server SE released on July 1, 2025 and serviced...

Exchange Server turns 30 this year, and that milestone is more than a nostalgic footnote for Microsoft—it is a reminder that enterprise email still sits at the center of identity, compliance, security, and operational control. Microsoft’s own anniversary post frames Exchange as the product that...

Microsoft’s Exchange engineering team has told administrators there are no security updates for on‑premises Exchange Server this month — an explicit, scheduled announcement that matters because a subset of customers remain on the vendor’s short, paid Extended Security Update (ESU) runway that...

Microsoft has cataloged CVE-2026-21527 as a Microsoft Exchange Server spoofing vulnerability in its Security Update Guide, but the public technical detail remains limited — a situation that demands urgent, pragmatic remediation while cautioning defenders against speculative technical...

Microsoft published the February 2026 Security Updates for Exchange Server and again urged administrators to apply them immediately — the rollup covers Exchange Server Subscription Edition (SE) RTM and, under Microsoft’s paid Extended Security Update (ESU) program, specific builds of Exchange...

No Exchange Server Security Updates for January 2026 — What on‑premise Exchange admins need to know and do now On January 13, 2026 Microsoft’s Exchange Team published a short but important bulletin: there are no security releases for any version of Exchange Server in January 2026. The post also...

Microsoft has cataloged a new elevation‑of‑privilege issue affecting Microsoft Exchange Server as CVE‑2025‑64666, a vulnerability vendors and trackers list as an Exchange Server elevation of privilege that requires immediate attention from administrators who run on‑premises or hybrid Exchange...

Microsoft has assigned CVE‑2025‑64667 to a newly recorded Microsoft Exchange Server vulnerability classified as a spoofing / UI misrepresentation issue; the MSRC entry and CVE aggregators show the advisory was published on December 9, 2025 and currently carries a medium severity (CVSS 3.1 ~5.3)...

The rise of enterprise AI in 2025 has shifted from academic promise to board‑level procurement: companies that once ran a handful of pilots are now making multi‑year commitments to cloud capacity, managed models, and agentic automation. An influential roundup published by Analytics Insight names...

Microsoft’s Exchange Team has confirmed that there are no security updates for any version of Exchange Server in November 2025, including Exchange Server Subscription Edition (SE) and Exchange Server 2016/2019 instances covered by the one‑time Extended Security Update (ESU) program; the team...

Upgrading your Exchange estate to the latest Cumulative Update (CU) is no longer a benign maintenance task — it’s an operational imperative tied to hybrid security, enforced service changes, and survival of rich coexistence features. This battle-tested, friendly guide walks you from inventory to...

Microsoft has quietly opened a conversation with on‑prem Exchange Server administrators about whether they would welcome Copilot-style AI features in locally hosted mail environments — and the survey’s most pointed question makes clear Microsoft is actively exploring hybrid approaches that could...

Microsoft’s latest push to "Copilot all the things" has landed squarely in the laps of Exchange Server administrators: Microsoft has circulated an interest survey asking whether organizations would consider enabling Copilot for Exchange Server (on‑premises) — even if that requires sending some...

Microsoft's outreach to Exchange Server administrators — a short, targeted survey asking whether organizations would want Copilot integrated into on‑premises Exchange — is a clear signal that the company is actively exploring ways to bring its AI assistant into environments that have, until now...

Microsoft’s Exchange Team has opened a direct line to on‑premises administrators with an interest survey for Copilot for Exchange Server (on‑premises) — a clear signal that Microsoft is actively exploring ways to bring Copilot‑style AI into environments that do not fully live in Microsoft 365...