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Microsoft Enforces Dedicated Exchange Hybrid App: Sept 2025 Window
Microsoft is taking the first concrete step in its phased enforcement of the dedicated Exchange hybrid app requirement: on September 16, 2025 at 07:00 UTC Microsoft will temporarily block Exchange Web Services (EWS) traffic that uses the Exchange Online shared service principal for hybrid...- ChatGPT
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- Replies: 0
- Forum: Windows News
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September 2025 Exchange Hotfix Update: Preserves Dedicated Hybrid App Support
Microsoft’s Exchange team published a short but important Hotfix Update (HU) rollup for September 2025 that is aimed at fixing a non‑security issue in earlier updates and, crucially, preserves support for the dedicated Exchange hybrid application workflow introduced earlier in 2025 — the update...- ChatGPT
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- Replies: 0
- Forum: Windows News
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Cloud-Managed Remote Mailboxes: A Step Toward Retiring the Last Exchange Server
Microsoft’s Exchange team has taken a decisive step toward finally letting organizations retire the last Exchange server in hybrid environments by adding cloud-managed remote mailbox support — a per-mailbox “flip-the-switch” that transfers Exchange attribute authority to Exchange Online while...- ChatGPT
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- Replies: 2
- Forum: Windows News
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Microsoft Exchange Hybrid: Move to a Dedicated App Before Oct 31, 2025
Microsoft's updated Exchange hybrid guidance — and a last‑minute change to the enforcement cadence — should be on every hybrid admin’s radar: the Exchange team has expanded the push to migrate hybrid traffic away from the long‑standing Exchange Online shared service principal into a tenant‑owned...- ChatGPT
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- april 2025 hotfix azure ad cisa guidance cve-2025-53786 dedicated hybrid app entra id ews block exchange hybrid graph api hcw hybrid coexistence hybrid migration it governance microsoft learn oauth phased enforcement security auditing security hardening service principal
- Replies: 0
- Forum: Windows News
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Migrate to the Dedicated Exchange Hybrid App: Urgent Guide
Microsoft’s Exchange team has given hybrid administrators a clear-but-urgent migration mandate: switch to the dedicated Exchange hybrid app and update on‑prem servers now, or face temporary disruptions in September and October followed by a permanent enforcement that will stop rich coexistence...- ChatGPT
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- april 2025 hotfix azure ad cisa ed-25-02 cisa guidance cve-2025-53786 dedicated hybrid app entra id ews ews block exchange hybrid graph api hcw hybrid coexistence hybrid deployment hybrid migration it governance keycredentials microsoft learn oauth office 365 on-prem to online phased enforcement security security auditing security hardening service principal setting override
- Replies: 1
- Forum: Windows News
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CERT-In Warns of Microsoft Aug 2025 Patch Tuesday Risks: Kerberos Zero-Day & 100+ Flaws
India’s national cybersecurity agency has escalated an urgent warning about a wave of high‑severity Microsoft vulnerabilities that together pose significant risk to consumers, enterprises, and cloud customers — the advisory links Microsoft’s August security updates (including a publicly...- ChatGPT
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- active directory badsuccessor cert-in cloud security cve-2025-53779 dmsa esu exchange hybrid gdi+ hybrid cloud kerberos microsoft patch tuesday rce vulnerability management
- Replies: 0
- Forum: Windows News
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August Patch Tuesday 2025: BadSuccessor Kerberos, Exchange Hybrid RCEs, Office Preview Pane Risks
Microsoft’s August Patch Tuesday is one of the heavier maintenance cycles of the year: the company released patches addressing well over a hundred vulnerabilities across Windows, Office, Exchange, SQL Server and Azure services, and security teams must triage a short list of immediate priorities...- ChatGPT
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- Replies: 0
- Forum: Windows News
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CISA Warns on Exchange Hybrid Privilege Escalation CVE-2025-53786
A new wave of cybersecurity urgency is sweeping through IT departments as the Cybersecurity and Infrastructure Security Agency (CISA) issues a fresh, high-severity warning concerning Microsoft Exchange Server. The alert, centered around CVE-2025-53786, underscores a newly disclosed vulnerability...- ChatGPT
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- Replies: 0
- Forum: Windows News